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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.
| Reporter | Title | Published | Views | Family All 81 |
|---|---|---|---|---|
 | Security Bulletin: IBM Cloud Pak for Data System 1.0 is affected by multiple vulnerabilities | 10 Jun 202607:46 | – | ibm |
 | CVE-2026-40355 | 28 Apr 202600:00 | – | attackerkb |
 | Amazon Linux 2023 : krb5-devel, krb5-libs, krb5-pkinit (ALAS2023-2026-1680) | 20 May 202600:00 | – | nessus |
| Alibaba Cloud Linux 3 : 0118: krb5 (ALINUX3-SA-2026:0118) | 25 May 202600:00 | – | nessus |
| AlmaLinux 8 : krb5 (ALSA-2026:16799) | 13 May 202600:00 | – | nessus |
| CentOS 9 : krb5-1.21.1-10.el9 | 4 May 202600:00 | – | nessus |
| Debian dla-4603 : krb5-admin-server - security update | 29 May 202600:00 | – | nessus |
| Debian dsa-6293 : krb5-admin-server - security update | 25 May 202600:00 | – | nessus |
| Fedora 45 : krb5 (2026-2e9fe57a46) | 29 Apr 202600:00 | – | nessus |
| Fedora 43 : krb5 (2026-684396998a) | 6 May 202600:00 | – | nessus |
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03 Jun 2026 08:43Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.9
EPSS0.00461
SSVC