DEBIAN-CVE-2026-5188
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-5188
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5188.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-5188
- Upstream
- Published
- 2026-04-10T04:17:15Z
- Modified
- 2026-09-14T17:03:17Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name (SAN) extension of X.509 certificates. A malformed certificate can specify an entry length larger than the enclosing sequence, causing the internal length counter to wrap during parsing. This results in incorrect handling of certificate data. The issue is limited to configurations using the original ASN.1 parsing implementation which is off by default.
- References
Affected packages
Debian:12 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
5.*
5.5.4-2
5.5.4-2+deb12u1
5.5.4-2+deb12u2
5.5.4-2+deb12u3
5.5.4-2.1
5.6.4-1
5.6.4-2
5.6.6-1
5.6.6-1.1
5.6.6-1.2
5.6.6-1.3~exp1
5.6.6-1.3
5.7.0-0.1
5.7.0-0.2
5.7.0-0.3
5.7.2-0.1
5.7.2-0.2
5.7.2-0.3
5.7.2-0.4
5.8.2-1
5.8.2-1.1
5.8.2-1.2
5.8.4-1
5.9.0-0.1
5.9.0-0.2
5.9.1-0.1
5.9.2-1
Debian:13 / wolfssl
Package
- Name
- wolfssl
- Purl
- pkg:deb/debian/wolfssl?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected