Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.4%
exploitation probability
0.4%top 66% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A vulnerability was found in Ollama up to 0.31.1. This issue affects the function readGGUFV1String of the file fs/ggml/gguf.go of the component GGUF Decoder. Performing a manipulation results in integer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used. Upgrading to version 0.31.2-rc1 is capable of addressing this issue. The patch is named 67b6a1c2d45321e0cb3c04a18073f9818de7724b. It is recommended to upgrade the affected component.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
n/a · Ollamapublic PoCs found — 1
cve_referencegithub.com/ollama/ollama/issues/17033unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/ollama/ollama/https://github.com/ollama/ollama/commit/67b6a1c2d45321e0cb3c04a18073f9818de7724bhttps://github.com/ollama/ollama/issues/17033https://github.com/ollama/ollama/pull/17062https://github.com/ollama/ollama/releases/tag/v0.31.2-rc1https://vuldb.com/cve/CVE-2026-86289https://vuldb.com/submit/906136https://vuldb.com/vuln/399448https://vuldb.com/vuln/399448/cti