# 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.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jul 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-r3q8-ccf6-4xhj

## 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 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-60108?

It affects 1 product.


Products: 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.

## 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

- [CVE-2026-60109](https://insights.sbomify.com/CVE-2026-60109/): Zeek < 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR Parsing (high 8.7)
- [CVE-2021-41732](https://insights.sbomify.com/CVE-2021-41732/): Other in n/a (high 8.2)
- [CVE-2019-12175](https://insights.sbomify.com/CVE-2019-12175/): Null dereference in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-60108 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-60108 in the wild and no public exploit code.

Affected product: zeek. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-60108/ (Markdown: https://insights.sbomify.com/CVE-2026-60108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-60108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-60108
- OSV: https://osv.dev/vulnerability/CVE-2026-60108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-60108/
Summaries are generated and may contain mistakes; the official description above is the record.