What is CVE-2024-42478?

CVE-2024-42478 is a medium-severity vulnerability in Ggerganov Llama.cpp, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2024-08-12.

How severe is CVE-2024-42478?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2024-42478 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Ggerganov Llama.cpp

CVE-2024-42478

llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause arbitrary address reading. This vulnerability is fixed in b3561.

Vulnerability class: Buffer Overflow

Published 2024-08-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: -0.000

Affected products

Ggerganov Llama.cpp — versions < b3561
Ggml Llama.cpp

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

References

github.com/ggerganov/llama.cpp/security/advisories/GHSA-5vm9-p64x-gqw9 (Exploit, Vendor Advisory)
github.com/ggerganov/llama.cpp/commit/b72942fac998672a79a1ae3c03b340f7e629980b (Patch)

Frequently asked questions

What is CVE-2024-42478?: CVE-2024-42478 is a medium-severity vulnerability in Ggerganov Llama.cpp, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2024-08-12.
How severe is CVE-2024-42478?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2024-42478 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.