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CVE-2026-66034 libssh2 Heap Out-of-Bounds Read via publickey subsystem

🗓️ 24 Jul 2026 16:42:18Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 7 Views

Libssh2 up to 1.11.1 has a heap out-of-bounds read in the publickey subsystem due to missing bounds on comment_len.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-66034
24 Jul 202616:42
cve
EUVD
EUVD-2026-48721
24 Jul 202618:31
euvd
NVD
CVE-2026-66034
24 Jul 202617:17
nvd
Positive Technologies
PT-2026-64381
24 Jul 202600:00
ptsecurity
[
  {
    "defaultStatus": "affected",
    "vendor": "libssh2",
    "product": "libssh2",
    "packageURL": "pkg:github/libssh2/libssh2",
    "repo": "https://github.com/libssh2/libssh2",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "semver",
        "lessThanOrEqual": "1.11.1"
      },
      {
        "status": "unaffected",
        "version": "a13bb6c773f0d55ad1628cede57e99803cd898d9",
        "versionType": "git"
      }
    ]
  }
]

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