What’s Vulnerable › Vulnerabilities

CVE-2026-78147: ggml-org llama.cpp ggml-RPC Server ggml-rpc.cpp deserialize_tensor deserialization

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-23 · updated 2026-10-12
• Weakness: CWE-20

Description

A vulnerability was found in ggml-org llama.cpp bec4772f6. The impacted element is the function deserialize_tensor of the file ggml/src/ggml-rpc/ggml-rpc.cpp of the component ggml-RPC Server. Performing a manipulation of the argument op/op_params results in deserialization. The attack may be initiated remotely. This vulnerability is distinct from CVE-2026-34159 (GHSA-j8rj-fmpv-wcxw, PR #20908), which only added a buffer==nullptr rejection in create_node() and does not validate op or op_params. The reported GitHub issue was closed automatically due to inactivity.

Affected products

• ggml-org llama.cpp: bec4772f6

References

• https://github.com/ggml-org/llama.cpp/
• https://github.com/ggml-org/llama.cpp/issues/25289
• https://vuldb.com/cve/CVE-2026-78147
• https://vuldb.com/submit/882534
• https://vuldb.com/vuln/394534
• https://vuldb.com/vuln/394534/cti

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