Is CVE-2026-6787 in the CISA KEV catalog?

No. CVE-2026-6787 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-6787?

CVE-2026-6787 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2026-6787?

CVE-2026-6787 has an EPSS score of 0.11% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6787?

Upgrade agent to 1.25.03.0000 or later.

CVE & CISA-KEV Catalog

CVE-2026-6787

HIGH

7.8

CVSS v3

NVD

Description

Use of Hard-coded Cryptographic Key vulnerability in WatchGuard Agent on Windows allows Inclusion of Code in Existing Process.This issue affects WatchGuard Agent: before 1.25.03.0000.

CWE-321

How to fix

Remediation Available

agentNVD

Affected:< 1.25.03.0000Fixed in:1.25.03.0000CVE-2026-6787derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.11%probability of exploitation in 30 days

1stpercentile

Low risk: more likely to be exploited than 1% of all known CVEs.

References

Vendor Advisory1

watchguard.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-11.