CVE-2026-52131
CVE-2026-52131 is a high-severity vulnerability in Ggml Llama.cpp with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-617.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 0% (35th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-617
- Affected product: Ggml Llama.cpp
- Published:
- Last modified:
Description
llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.
Frequently asked questions
- What is CVE-2026-52131?
- llama.cpp b5693 and before has a Reachable Assertion via the gguf_reader::read function.
- How severe is CVE-2026-52131?
- CVE-2026-52131 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-52131 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-52131?
- CVE-2026-52131 affects Ggml Llama.cpp. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-52131?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-52131 published?
- CVE-2026-52131 was published on 2026-09-01 and last updated on 2026-09-04.
References
Affected products (1)
- cpe:2.3:a:ggml:llama.cpp:*:*:*:*:*:*:*:*
More vulnerabilities in Ggml Llama.cpp
- CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
- CVE-2026-34159 — Critical (CVSS 9.8): llama.cpp is an inference of several LLM models in C/C++. Prior to version b8492, the RPC backend's…
- CVE-2026-21869 — High (CVSS 8.8): llama.cpp is an inference of several LLM models in C/C++. In commits 55d4206c8 and prior, the n_discard parameter is…
- CVE-2025-49847 — High (CVSS 8.8): llama.cpp is an inference of several LLM models in C/C++. Prior to version b5662, an attacker‐supplied GGUF model…
- CVE-2024-23605 — High (CVSS 8.8): A heap-based buffer overflow vulnerability exists in the GGUF library header.n_kv functionality of llama.cpp Commit…
- CVE-2024-23496 — High (CVSS 8.8): A heap-based buffer overflow vulnerability exists in the GGUF library gguf_fread_str functionality of llama.cpp Commit…
All CVEs affecting Ggml Llama.cpp →
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