CVSS 3.1
8.4 highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:LCVE-2026-109140
High (8.4). EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
The vulnerability is that Krill encrypts every login-session token with a nonce built from a counter that is reset to 0 on every Krill restart, so the same (key, nonce) pair is used again after each restart.
Severity
- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 24th percentile. Scored 2026-11-05. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-323 Reusing a Nonce, Key Pair in Encryption
- OWASP Top 10
- A04:2025 Cryptographic Failures
- Published
- Modified
- Record from
- the NVD, synced
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Explain CVE-2026-109140 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-109140?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-109140?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-109140 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.