CVE-2026-124994

MEDIUM 6.3

Turboderp-org ExLlamaV3 NGramEmbedding ngram.cu ngram_dequant out-of-bounds

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-125 CWE-119
Vendor	turboderp-org
Product	exllamav3
Published	Nov 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Turboderp-org / ExLlamaV3

1.6.0 1.6.1 1.6.2 1.6.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/433165 vuldb.com: https://vuldb.com/vuln/433165/cti vuldb.com: https://vuldb.com/cve/CVE-2026-124994 vuldb.com: https://vuldb.com/submit/1040626 github.com: https://github.com/turboderp-org/exllamav3/issues/525 github.com: https://github.com/user-attachments/files/33598849/poc.zip github.com: https://github.com/turboderp-org/exllamav3/commit/c9a57ae832a3035e264e0a412e1daf4ebb699b98 github.com: https://github.com/turboderp-org/exllamav3/releases/tag/v1.6.4 github.com: https://github.com/turboderp-org/exllamav3/

Credits

🔍 Dem00000 (VulDB User)