CVE-2026-4747 - Vulnerability Analysis
HighCVSS: 8.8Last Updated: March 26, 2026
FreeBSD kgssapi.ko & librpcgss_sec - Remote Code Execution
Overview
FreeBSD kgssapi.ko and librpcgss_sec contain a stack buffer overflow caused by improper validation of RPCSEC_GSS data packet signatures, letting remote attackers execute code without authentication, exploit requires network access to vulnerable RPC server.
Severity & Score
Impact
Remote attackers can execute arbitrary code in kernel or userspace, potentially leading to full system compromise.
Mitigation
Update to the latest FreeBSD version with patched kgssapi.ko and librpcgss_sec modules.
Social Media Activity(2 posts)
It's fair to say that <https://nitter.net/cperciva/status/2049591719143059860>, a few hours before Gary's video, was not bullshit: ＂ In April, FreeBSD issued eight security advisories. Six of them were for issues found by AI.＂ Colin Percival quotes his own post from March 2026: ＂… LLMs are producing lots of slop, but they're also finding a heck of a lot of real vulnerabilities.＂ @seuros if you disagree with CWE-121 – the Common Weakness Enumeration (CWE™) for CVE-2026-4747 – you might contact MITRE – <https://www.cve.org/CVERecord?id=CVE-2026-4747>. Cc @garyhtech @[email protected] @[email protected] (automated) #AI #FreeBSD #vulnerability #Anthropic #Claude #Mythos #security #infosec
View original post
It's fair to say that <https://nitter.net/cperciva/status/2049591719143059860>, a few hours before Gary's video, was not bullshit: ＂ In April, FreeBSD issued eight security advisories. Six of them were for issues found by AI.＂ Colin Percival quotes his own post from March 2026: ＂… LLMs are producing lots of slop, but they're also finding a heck of a lot of real vulnerabilities.＂ @seuros if you disagree with CWE-121 – the Common Weakness Enumeration (CWE™) for CVE-2026-4747 – you might contact MITRE – <https://www.cve.org/CVERecord?id=CVE-2026-4747>. Cc @garyhtech @[email protected] @[email protected] (automated) #AI #FreeBSD #vulnerability #Anthropic #Claude #Mythos #security #infosec
View original postGitHub Repositories(2 repos)
Related Resources
Details
- CVE ID
- CVE-2026-4747
- Severity
- High
- CVSS Score
- 8.8
- Type
- buffer_overflow
- Status
- unconfirmed
- EPSS
- 9.1%
- Social Posts
- 2
CWE
- CWE-121
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H