Turboderp-org ExLlamaV3 NGramEmbedding ngram.cu ngram_dequant out-of-bounds
- Exploited
- No known exploitation
- Fix
- Fix or patch referenced
- Who is exposed
- Not reported
Do first: Apply the patch listed under Evidence.
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 12/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
ExLlamaV3 by Turboderp-org, in the NGramEmbedding component's ngram_dequant function, has a flaw where a manipulated head_bias argument causes an out-of-bounds read. A remote attacker can trigger it over the network without logging in, but it requires some user action.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
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.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure7/25Reachable over the network without a login · Unknown: No advisory context yet
- Reach?/20Unknown. No tracked technology or package matched
- Severity5.3/10CVSS 5.3
- No patch0/5No signal
What would change the score
- Would score about 67 if added to CISA KEV
- Would score about 62 if CISA's SSVC rates exploitation active
- Would score about 27 if advisories confirm default setups are exposed
What to do
Apply the patch listed under Evidence.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Turboderp-org ExLlamaV3
1.6.0, 1.6.1, 1.6.2, 1.6.3
Evidence 9
- Advisory
- Advisory
- Advisory
- Advisory
- Patch
Show all 9 sourcesShow fewer sources
- Patch
- Exploit
- Report
- Repository
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-124994
Is CVE-2026-124994 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-124994?
ExLlamaV3: versions 1.6.0, 1.6.1, 1.6.2, 1.6.3.Source: cve.now feed data