llama.cpp GGUF File Parser integer overflow

Summaryinfo

A vulnerability was found in llama.cpp. It has been rated as critical. Affected is an unknown function of the component GGUF File Parser. The manipulation leads to integer overflow. This vulnerability is documented as CVE-2026-126974. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in llama.cpp (version unknown). It has been rated as critical. This issue affects an unknown function of the component GGUF File Parser. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. Impacted is confidentiality, integrity, and availability.

The identification of this vulnerability is CVE-2026-126974. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/14/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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• llama.cpp

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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