CVE-2026-70368
- Source
- https://cve.org/CVERecord?id=CVE-2026-70368
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70368.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-70368
- Downstream
- Published
- 2026-08-04T13:52:25.255Z
- Modified
- 2026-08-10T08:05:09.046108Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
- Summary
- Stunnel: stack-based out-of-bounds read/write in stunnel s_vlog via oversized log message
- Details
-
A stack-based out-of-bounds read vulnerability exists in the "s_vlog" function of stunnel, when handling oversized log messages via "vsnprintf". A remote attacker with network access to a stunnel service can send protocol inputs that trigger a log message longer than 1024 bytes, leading to an out-of-bounds stack read and a potential crash. In certain corner cases, the same vulnerability could be used to replace a series of trailing "\n" characters with "\0".
- Database specific
{ "cna_assigner": "redhat", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70368.json", "cwe_ids": [ "CWE-125" ] }- References
-
- https://access.redhat.com/downloads/content/package-browser/
- https://access.redhat.com/security/cve/CVE-2026-70368
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70368.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-70368
- https://bugzilla.redhat.com/show_bug.cgi?id=2462029
- https://github.com/mtrojnar/stunnel
Affected packages
Git / github.com/mtrojnar/stunnel
Affected versions
stunnel-5.*
stunnel-5.68
stunnel-5.69
stunnel-5.70
stunnel-5.71
stunnel-5.72
stunnel-5.73
stunnel-5.74
stunnel-5.75
stunnel-5.76
stunnel-5.77
stunnel-5.78
stunnel-5.79
Database specific
vanir_signatures_modified
"2026-08-10T08:05:09Z"
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70368.json"
vanir_signatures
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"length": 853.0,
"function_hash": "129234256943673869284925799732962305439"
},
"signature_version": "v1",
"source": "https://github.com/mtrojnar/stunnel/commit/62ab5ccf33485b81bc4eaf0c76fd5558d2458e08",
"id": "CVE-2026-70368-ffd9f3f3"
}
]