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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.

PUBLISHED Reserved 2026-07-08 | Published 2026-07-09 | Updated 2026-07-14 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Allocation of Resources Without Limits or Throttling

Product status

Default status
affected

Any version before 8.0.9
affected

Credits

Jaime Sánchez Sánchez finder

References

github.com/zeek/zeek/releases/tag/v8.0.9 (Release Notes) release-notes

github.com/...ommit/93ff6950a90cfa9d00c1062cde429313a0402a01 (Patch Commit) patch

www.vulncheck.com/...memory-consumption-dos-via-ftp-analyzer third-party-advisory

cve.org (CVE-2026-60108)

nvd.nist.gov (CVE-2026-60108)

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