Veille CVE
CVE-2026-40355
7.5 ÉlevéeDescription
In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.
Produits concernés
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 5.9 Moyenne | cve@mitre.org | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 7.5 Élevée | nvd@nist.gov (NVD) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Faiblesses (CWE)
Références
- https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html ExploitPatchThird Party Advisory
- https://github.com/krb5/krb5/commit/2e75f0d9362fb979f5fc92829431a590a130929f Patch
- https://web.mit.edu/kerberos/advisories/ Vendor Advisory
- https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html ExploitPatchThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html