210 lines
8.5 KiB
JSON
210 lines
8.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-66038",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-07-23T20:45:17.816Z",
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"datePublished": "2026-07-24T19:39:27.448Z",
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"dateUpdated": "2026-07-28T01:06:28.780Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-07-28T01:06:28.780Z"
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},
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"title": "FFmpeg LCL/ZLIB Video Decoder Information Disclosure via lcldec.c",
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"descriptions": [
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{
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"lang": "en",
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"value": "FFmpeg through 8.1.2, fixed in commit 8670835, contains an information disclosure vulnerability in the LCL/ZLIB video decoder that allows attackers to expose uninitialized heap memory by supplying a valid zlib stream that inflates to fewer bytes than the expected frame size. The zlib_decomp() function in lcldec.c treats short decompression as non-fatal and continues to the RGB24 conversion path, which copies a full frame's worth of rows from the allocation buffer using original frame dimensions, causing uninitialized heap contents including pointer-derived allocator bytes to be copied into the attacker-observable AVFrame output and potentially defeating ASLR in long-lived media processing services."
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}
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],
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"tags": [
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"x_open-source"
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],
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"datePublic": "2026-07-04T00:00:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-908",
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"description": "Use of Uninitialized Resource",
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"type": "CWE"
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}
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]
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}
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],
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"affected": [
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{
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"defaultStatus": "affected",
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"vendor": "FFmpeg",
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"product": "FFmpeg",
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"repo": "https://code.ffmpeg.org/FFmpeg/FFmpeg",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"versionType": "semver",
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"lessThanOrEqual": "8.1.2"
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},
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{
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"status": "unaffected",
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"version": "86708357d126af84c16f80d9c57335d1e8c845c5",
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"versionType": "git"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
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"versionEndIncluding": "8.1.2"
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}
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]
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}
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]
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "PASSIVE",
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"vulnConfidentialityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"vulnerabilityResponseEffort": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"version": "4.0",
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"baseSeverity": "HIGH",
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"baseScore": 7.1,
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
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}
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},
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "REQUIRED",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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"availabilityImpact": "NONE",
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"version": "3.1",
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"baseSeverity": "MEDIUM",
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"baseScore": 6.5,
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
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}
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}
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],
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"references": [
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{
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"url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23626",
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"name": "Pull Request",
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"tags": [
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"issue-tracking"
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]
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},
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{
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"url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/e7cbfd1c507b57a806a5825b87d609963e862c8c",
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"name": "Patch Commit",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://www.vulncheck.com/advisories/ffmpeg-lcl-zlib-video-decoder-information-disclosure-via-lcldec-c",
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"tags": [
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"third-party-advisory"
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Adrian Junge (vurlo)",
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"type": "finder"
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"x_generator": {
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"engine": "vulncheck"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-24T20:14:10.590088Z",
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"id": "CVE-2026-66038",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-07-24T20:14:17.998Z"
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}
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}
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]
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}
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} |