CVE-2026-41287: Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow

Q: How do I fix CVE-2026-41287?

agent: upgrade to 1.25.03.0000. Exact commands for each OS are on this page.

Q: Is CVE-2026-41287 being exploited?

CVE-2026-41287 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-41287 affect?

CVE-2026-41287 affects agent. Severity is medium (CVSS 6.5). Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.

Q: How urgent is CVE-2026-41287?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-41287 is a medium-severity flaw (CVSS 6.5) affecting agent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-121
Published	2026-05-06
Last modified	2026-10-26

Publisher (CNA): WatchGuard Technologies, Inc. · Vendor: watchguard

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-06 15:16 UTCPublished CVE record published
2026-10-26 19:10 UTCUpdated Record last modified

watchguard agent UPGRADE

Affected: < 1.25.03.0000

Fixed in: 1.25.03.0000

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy agent || rpm -q agent || agent --version

2. UPGRADE to 1.25.03.0000 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade agent

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade agent

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41287?

agent: upgrade to 1.25.03.0000. Exact commands for each OS are on this page.

Is CVE-2026-41287 being exploited?

CVE-2026-41287 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41287 affect?

CVE-2026-41287 affects agent. Severity is medium (CVSS 6.5). Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.

How urgent is CVE-2026-41287?

Priority 27/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities

Related CVEs

CVE-2026-41288 HIGH 7.8 UPGRADE Incorrect permission assignment for a resource in the patch management component of the WatchGuard Agent on Wi
CVE-2026-6787 HIGH 7.8 UPGRADE Use of Hard-coded Cryptographic Key vulnerability in WatchGuard Agent on Windows allows Inclusion of Code in E
CVE-2026-6788 HIGH 7.8 UPGRADE Uncontrolled Search Path Element vulnerability in WatchGuard Agent on Windows allows Using Malicious Files.
CVE-2026-41286 MEDIUM 6.5 UPGRADE Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow

References

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