CVE-2026-60108 Zeek < 8.0.9 Uncontrolled Memory Consumption DoS via FTP Analyzer
Unauthenticated remote attackers can cause denial of service in Zeek sensors by sending crafted FTP control sessions that trigger uncontrolled memory consumption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-60108?
CVE-2026-60108 is a high-severity denial of service vulnerability in zeek, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Zeek before 8.0.9 contains an uncontrolled memory consumption vulnerability in the FTP analyzer that allows unauthenticated remote attackers to cause process termination by sending a crafted FTP control session negotiating AUTH GSSAPI followed by a large ADAT control line. Attackers can exploit the NVT_Analyzer component's lack of a maximum line length check, causing it to continuously double its internal buffer without bounds during base64 decoding of an attacker-controlled ADAT token, resulting in denial of service of the Zeek sensor.
Weakness: CWE-770
Which versions are affected by CVE-2026-60108?
It affects 1 product.
Products include Zeek Zeek.
How do I fix CVE-2026-60108?
No fix has been published for CVE-2026-60108 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-60108 being exploited?
There is no known exploitation of CVE-2026-60108 in the wild and no public exploit code.
Other vulnerabilities in zeek
Sources
Also known as GHSA-r3q8-ccf6-4xhj.