How severe is CVE-2026-6787?

CVE-2026-6787 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-6787 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-6787?

CVE-2026-6787 affects Watchguard Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-6787?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-6787 have an EU (EUVD) identifier?

Yes. CVE-2026-6787 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27840.

When was CVE-2026-6787 published?

CVE-2026-6787 was published on 2026-05-06 and last updated on 2026-08-10.

CVE-2026-6787

CVE-2026-6787 is a high-severity vulnerability in Watchguard Agent with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-321.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27840
Weakness: CWE-321
Affected product: Watchguard Agent
Published: 2026-05-06
Last modified: 2026-08-10

Description

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

Frequently asked questions

What is CVE-2026-6787?: Use of Hard-coded Cryptographic Key vulnerability in WatchGuard Agent on Windows allows Inclusion of Code in Existing Process.
How severe is CVE-2026-6787?: CVE-2026-6787 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-6787 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-6787?: CVE-2026-6787 affects Watchguard Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-6787?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-6787 have an EU (EUVD) identifier?: Yes. CVE-2026-6787 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27840.
When was CVE-2026-6787 published?: CVE-2026-6787 was published on 2026-05-06 and last updated on 2026-08-10.

References

Affected products (1)

cpe:2.3:a:watchguard:agent:*:*:*:*:*:windows:*:*

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