CVE-2026-93841
LOWDescription
vLLM through 0.29.0 contains a memory corruption vulnerability in the Triton _bincount_kernel where prompt token IDs index the penalty prompt-presence bitset without bounds checking against vocabulary size. Attackers can submit multimodal audio requests with tokens equal to vocabulary size, causing out-of-bounds writes that corrupt concurrent requests' sampler state and alter repetition penalty behavior.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 14% of all known CVEs.
References
Related Vulnerabilities
Other CWE-129 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2021-35592 | Medium | 6.3 | 52% | - | Fix |
| CVE-2021-35598 | Medium | 6.3 | 51% | - | Fix |
| CVE-2021-35594 | Medium | 6.3 | 51% | - | Fix |
| CVE-2022-35737 | High | 7.5 | 24% | - | Fix |
| CVE-2014-6317 | High | 7.1 | 18% | - | - |
| CVE-2023-0755 | Critical | 9.8 | 12% | - | - |
Common questions
How do I fix CVE-2026-93841?
Upgrade vllm to 0.30.0 or later.
Is CVE-2026-93841 being actively exploited?
Not that we know of. CVE-2026-93841 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.24% is the estimated probability that it will be exploited in the next 30 days. That is higher than 14% of all scored CVEs.
How severe is CVE-2026-93841?
CVE-2026-93841 has a CVSS v3 base score of 3.7, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-93841 affect?
Published advisories record a fix for vllm (PyPI (Python)). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-28.