CVE-2026-52131

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

7.5 High

CVE-2026-52131 is a high vulnerability (CVSS 7.5) in Ggml Llama.cpp, published September 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. No source names a fixed version.

What does this mean?

Severity: 7.5 HighCVSS 3.1, CVE List
Exploit chance: 0.43%EPSS, 37th percentile
Exploitation: None knownNot on CISA’s or ENISA’s lists
Fixed in: No fix listedNo source names one

Description

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.43%Up 0.3 points since Sep 2, 2026

Affected products

ggml llama.cpp

Affected packages

Affected packages
Package	Affected	Fixed
`llama.cpp` Debian:14	All versions, plus listed versions 10108+dfsg-110108+dfsg1-110108+dfsg1-210192+dfsg-110192+dfsg-2 Show 45 moreShow less 10192+dfsg-2~exp110271+dfsg-110344+dfsg-110438+dfsg-11:0.1.2+dfsg-1~exp11:0.2.0+dfsg1-11:0.2.0+dfsg1-1~exp11:0.4.0+dfsg-11:0.4.1+dfsg-11:0.5.0+dfsg-11:0.5.0+dfsg-25151+dfsg-1~exp25151+dfsg-1~exp35318+dfsg-15318+dfsg-25713+dfsg-15760+dfsg-15760+dfsg-25760+dfsg-35760+dfsg-45882+dfsg-15882+dfsg-25882+dfsg-35882+dfsg-3~exp15882+dfsg-3~exp25882+dfsg-3~exp35882+dfsg-46641+dfsg-16641+dfsg-26641+dfsg-37593+dfsg-17593+dfsg-27593+dfsg-37965+dfsg-18064+dfsg-18064+dfsg-28461+dfsg-18611+dfsg-18681+dfsg-18870+dfsg-18941+dfsg-19009+dfsg-19071+dfsg-19190+dfsg-19413+dfsg-1	None known
`llama.cpp` Ubuntu:26.10	All versions, plus listed versions 8681+dfsg-19721+dfsg-1ubuntu110438+dfsg-110438+dfsg-1ubuntu1	None known
`llama.cpp` Ubuntu:26.04:LTS	All versions, plus listed versions 5882+dfsg-28064+dfsg-1ubuntu18681+dfsg-1	None known

What each source reports

CVE List Score used7.5

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Record: CVE-2026-52131
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-617
Updated: 2026-11-02

EUVDEUVD-2026-694117.5

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Record: EUVD-2026-69411
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-jfjx-j76r-xrpf7.5

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Record: GHSA-jfjx-j76r-xrpf
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-617
Updated: 2026-11-02

NVD7.5

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Record: CVE-2026-52131
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-617
Updated: 2026-11-02

OSV7.5

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Record: CVE-2026-52131
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-521317.5

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Record: DEBIAN-CVE-2026-52131
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-521317.5

llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.

Record: UBUNTU-CVE-2026-52131
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

This page doesn't list everything

Left out here: 9 versions. The JSON record has them.