CVE-2026-116840

llama.cpp b5854 before b11275 contains an integer overflow vulnerability in gguf_init_from_reader that bypasses the CVE-2025-53630 size check when padding near-SIZE_MAX tensor sizes. Attackers can supply a crafted GGUF file whose tensor size pads to zero, causing an undersized data blob and out-of-bounds reads by consumers.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ggml-org/llama.cpp/blob/v0.5.0/ggml/src/gguf.cpp#L794-L795
https://github.com/ggml-org/llama.cpp/commit/a6ea155d3d38b3f6f43d0c0dc29c2d592413ef44
https://github.com/ggml-org/llama.cpp/issues/26978
https://github.com/ggml-org/llama.cpp/pull/26979
https://github.com/ggml-org/llama.cpp/releases/tag/b11275
https://www.vulncheck.com/advisories/llama-cpp-b5854-before-b11275-integer-overflow-in-gguf-init-from-reader

Configurations

No configuration.

History

27 Oct 2026, 01:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-27 01:19

Updated : 2026-10-27 15:59

NVD link : CVE-2026-116840

Mitre link : CVE-2026-116840

CVE.ORG link : CVE-2026-116840

JSON object : View

Products Affected

No product.

CWE

CWE-190

Integer Overflow or Wraparound

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