What is CVE-2026-6787?

CVE-2026-6787 is a high-severity vulnerability in Watchguard Agent, classified under Use of Hard-coded Cryptographic Key. CVSS score: 7.8/10. Published 2026-05-06.

How severe is CVE-2026-6787?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Watchguard Agent

CVE-2026-6787

Use of Hard-coded Cryptographic Key vulnerability in WatchGuard Agent on Windows allows Inclusion of Code in Existing Process.

Published 2026-05-06 · last modified 2026-08-10.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (4.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

Watchguard Agent
Watchguard Agent — versions 1.0.0.0, 0

Weakness classification (CWE)

CWE-321 — Use of Hard-coded Cryptographic Key

References

5d1c2695-1a31-4499-88ae-e847036fd7e3 (vendor-advisory, Vendor Advisory)
5d1c2695-1a31-4499-88ae-e847036fd7e3 (vendor-advisory)

Frequently asked questions

What is CVE-2026-6787?: CVE-2026-6787 is a high-severity vulnerability in Watchguard Agent, classified under Use of Hard-coded Cryptographic Key. CVSS score: 7.8/10. Published 2026-05-06.
How severe is CVE-2026-6787?: High severity. CVSS v3 base score is 7.8 out of 10.