CVE-2026-124994: medium-severity vulnerability in Turboderp-org ExLlamaV3
Turboderp-org ExLlamaV3 NGramEmbedding ngram.cu ngram_dequant out-of-bounds
Published · Updated
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.3%
A security flaw has been discovered in Turboderp-org ExLlamaV3 up to 1.6.3. The affected element is the function ngram_dequant of the file exllamav3/exllamav3_ext/ngram.cu of the component NGramEmbedding. The manipulation of the argument head_bias results in out-of-bounds read. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.4 is sufficient to fix this issue. The patch is identified as c9a57ae832a3035e264e0a412e1daf4ebb699b98. It is suggested to upgrade the affected component.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
Turboderp-org · ExLlamaV3public PoCs found — 1
cve_referencegithub.com/user-attachments/files/33598849/poc.zipunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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References
https://github.com/turboderp-org/exllamav3/https://github.com/turboderp-org/exllamav3/commit/c9a57ae832a3035e264e0a412e1daf4ebb699b98https://github.com/turboderp-org/exllamav3/issues/525https://github.com/turboderp-org/exllamav3/releases/tag/v1.6.4https://github.com/user-attachments/files/33598849/poc.ziphttps://vuldb.com/cve/CVE-2026-124994https://vuldb.com/submit/1040626https://vuldb.com/vuln/433165https://vuldb.com/vuln/433165/cti