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vuln-cve/data/2026/52xxx/CVE-2026-52859.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-52859",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-08T18:41:27.725Z",
"datePublished": "2026-06-11T18:33:09.886Z",
"dateUpdated": "2026-06-11T19:38:46.065Z"
},
"containers": {
"cna": {
"title": "Vim: Out-of-bounds Read in Terminal Screen Snapshot",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"lang": "en",
"description": "CWE-125: Out-of-bounds Read",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/vim/vim/security/advisories/GHSA-47gw-8gc3-mgcm",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/vim/vim/security/advisories/GHSA-47gw-8gc3-mgcm"
},
{
"name": "https://github.com/vim/vim/commit/63680c6d3d52477817b49cd1a66e7aabe8a7aa19",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/vim/vim/commit/63680c6d3d52477817b49cd1a66e7aabe8a7aa19"
},
{
"name": "https://github.com/vim/vim/releases/tag/v9.2.0565",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/vim/vim/releases/tag/v9.2.0565"
}
],
"affected": [
{
"vendor": "vim",
"product": "vim",
"versions": [
{
"version": "< 9.2.0565",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-06-11T18:33:09.886Z"
},
"descriptions": [
{
"lang": "en",
"value": "Vim is an open source, command line text editor. Prior to version 9.2.0565, the update_snapshot() function in src/terminal.c copies the visible terminal screen into the scrollback buffer when a snapshot is taken. For each screen cell it walks the cell's chars[] array with no upper bound, stopping only when it encounters a NUL terminator. When a cell legitimately fills all VTERM_MAX_CHARS_PER_CELL (6) slots — a base character plus five combining marks — the bundled libvterm returns the array without a terminating NUL, so the loop reads past the fixed six-element array and appends the out-of-bounds values to a buffer reserved for only six characters. A program whose output is rendered inside a :terminal window can trigger this with a short byte sequence and no Vim scripting, leading to a crash. This issue has been patched in version 9.2.0565."
}
],
"source": {
"advisory": "GHSA-47gw-8gc3-mgcm",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-11T19:35:19.075882Z",
"id": "CVE-2026-52859",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"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": "2026-06-11T19:38:46.065Z"
}
}
]
}
}