CVE-2026-116840
llama.cpp b5854 before b11275 Integer Overflow in gguf_init_from_reader
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-190 |
| Vendor | ggml-org |
| Product | llama.cpp |
| Published | Oct 27, 2026 |
Stay Ahead of the Next One
Get instant alerts for ggml-org llama.cpp
Be the first to know when new medium vulnerabilities affecting ggml-org llama.cpp are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
ggml-org / llama.cpp
b5854 < b11275 0.1.0 < 0.6.0
References
github.com: https://github.com/ggml-org/llama.cpp/issues/26978 github.com: https://github.com/ggml-org/llama.cpp/pull/26979 github.com: https://github.com/ggml-org/llama.cpp/commit/a6ea155d3d38b3f6f43d0c0dc29c2d592413ef44 github.com: https://github.com/ggml-org/llama.cpp/blob/v0.5.0/ggml/src/gguf.cpp#L794-L795 github.com: https://github.com/ggml-org/llama.cpp/releases/tag/b11275 vulncheck.com: https://www.vulncheck.com/advisories/llama-cpp-b5854-before-b11275-integer-overflow-in-gguf-init-from-reader
Credits
Xiang Chen (x14ngch3n) 🔍 Jeongwoo Lee x14ngch3n