CVE-2026-34159 is a critical remote code execution vulnerability affecting llama.cpp versions prior to b8492, stemming from insufficient bounds validation in the RPC backend's deserialize_tensor() function. An unauthenticated attacker can exploit this flaw remotely via crafted GRAPH_COMPUTE messages, gaining arbitrary read/write access to process memory, which can lead to full ASLR bypass and remote code execution. This vulnerability carries a CVSS score of 9.8 (Critical). While there are no public exploits available in common frameworks and it is not currently listed on CISA's Known Exploited Vulnerabilities (KEV) catalog, the issue has garnered some community discussion. Organizations using affected versions should update to b8492 or later immediately.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< b8492CPE matchmatch criteria | cpe:2.3:a:ggml:llama.cpp:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.