CVE-2026-60108
Unbounded memory growth in Zeek FTP analyzer enables remote denial-of-service
Is CVE-2026-60108 being exploited?
Not confirmed. CVE-2026-60108 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.79% probability of exploitation in the next 30 days.
How severe is CVE-2026-60108?
CVE-2026-60108 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-60108?
Yes. A fix has been recorded for CVE-2026-60108. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-60108 affect?
CVE-2026-60108 affects Zeek < 8.0.9, Zeek FTP analyzer (NVT_Analyzer), Zeek sensors. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-60108?
Upgrade Zeek to 8.0.9+ or apply vendor fix; block/monitor FTP AUTH GSSAPI traffic.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote attacker can send FTP AUTH GSSAPI with an oversized ADAT token causing unbounded buffer growth during base64 decode and crash Zeek sensors (DoS).
Immediate action required
- affected< 8.0.9
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.