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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-27711",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-02-23T17:56:51.203Z",
"datePublished": "2026-02-25T23:44:26.848Z",
"dateUpdated": "2026-02-26T15:07:47.597Z"
},
"containers": {
"cna": {
"title": "NanaZip UFS Archive Parser Memory Corruption via Unvalidated Directory Record Length",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"lang": "en",
"description": "CWE-125: Out-of-bounds Read",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9c",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9c"
}
],
"affected": [
{
"vendor": "M2Team",
"product": "NanaZip",
"versions": [
{
"version": ">= 5.0.1252.0, < 6.0.1638.0",
"status": "affected"
},
{
"version": ">= 6.1, < 6.5.1638.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-02-25T23:44:26.848Z"
},
"descriptions": [
{
"lang": "en",
"value": "NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, a memory corruption vulnerability in NanaZip’s UFS parser allows a crafted `.ufs/.ufs2/.img` file to trigger out-of-bounds memory access during archive open/listing. The bug is reachable via normal user file-open flow and can cause process crash, hang, and potentially exploitable heap corruption. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue."
}
],
"source": {
"advisory": "GHSA-rjwv-4w7x-hc9c",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/M2Team/NanaZip/security/advisories/GHSA-rjwv-4w7x-hc9c",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-02-26T15:07:42.687682Z",
"id": "CVE-2026-27711",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-02-26T15:07:47.597Z"
}
}
]
}
}