CVE-2026-27940
HIGH EPSS 7.4%
Published Mar 12, 20263mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
Published Mar 12, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago
Description
llama.cpp is an inference of several LLM models in C/C++. Prior to b8146, the gguf_init_from_file_impl() in gguf.cpp is vulnerable to an Integer overflow, leading to an undersized heap allocation. Using the subsequent fread() writes 528+ bytes of attacker-controlled data past the buffer boundary. This is a bypass of a similar bug in the same file - CVE-2025-53630, but the fix overlooked some areas. This vulnerability is fixed in b8146.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High
Threat Intelligence
EPSS Exploit Probability
7.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 2
CWE-122
CWE-190 Integer Overflow or Wraparound Numeric Error
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| ggml | llama.cpp | * | <b8146 |
References 1
- github.com https://github.com/ggml-org/llama.cpp/security/advisories/GHSA-3p4r-fq3f-q74v
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.