Out-of-bounds Read in Turboderp-Org Exllamav3
CVE-2026-124996
A weakness has been identified in Turboderp-org ExLlamaV3 up to 1.6.3. The impacted element is the function routing_sel_norm_kernel of the file exllamav3/exllamav3_ext/routing.cu of the component hash-MoE routing. This manipulation of the argument gate.tid2eid causes out-of-bounds read. Remote exploitation of the attack is possible. Upgrading to version 1.6.4 is sufficient to resolve this issue. Patch name: c9a57ae832a3035e264e0a412e1daf4ebb699b98. Upgrading the affected component is recommended.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Turboderp-Org Exllamav3 — versions 1.6.0, 1.6.1, 1.6.2
Weakness classification (CWE)
References
- VDB-433166 | Turboderp-org ExLlamaV3 hash-MoE routing routing.cu routing_sel_norm_kernel out-of-bounds (vdb-entry, technical-description)
- VDB-433166 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- CVE-2026-124996 | CVE Analysis and Report (third-party-advisory)
- Submit #1040627 | turboderp-org exllamav3 1.4.8 through 1.6.1 Out-of-bounds Read (third-party-advisory)
- github.com/turboderp-org/exllamav3/issues/526 (issue-tracking)
- github.com/turboderp-org/exllamav3/commit/c9a57ae832a3035e264e0a412e1daf4ebb699… (patch)
- github.com/turboderp-org/exllamav3/releases/tag/v1.6.4 (patch)
- github.com/turboderp-org/exllamav3/ (product)
Frequently asked questions
- What is CVE-2026-124996?
- CVE-2026-124996 is a medium-severity vulnerability in Turboderp-Org Exllamav3, classified under Out-of-bounds Read. CVSS score: 6.3/10. Published 2026-11-09.
- How severe is CVE-2026-124996?
- Medium severity. CVSS v3 base score is 6.3 out of 10.