CVE-2026-6787: watchguard agent Use of Hard-coded Cryptographic Key
CVSS: 8.5v4.0HighModified
Published 06-05-2026Last modified 10-08-2026
Vulnerability summary
CVE-2026-6787 is a high (CVSS 8.5) Use of Hard-coded Cryptographic Key vulnerability in watchguard agent. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.4% of scored vulnerabilities.
CVSS score
8.5/10
010
High · v4.0 (CVE.org)EPSS score
0.16%
0%100%
Low · +0.04 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 06-05-2026PublishedVulnerability first disclosed.
- 10-08-2026Last modifiedVulnerability information updated.
Description
Use of Hard-coded Cryptographic Key vulnerability in WatchGuard Agent on Windows allows Inclusion of Code in Existing Process.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 8.5Preferred score · CVE.org (CNA)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesAll 2 agree
- NVDNIST8.5HighCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
High 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
EPSS trend
Probability
0.16%
Chance of exploitation in the next 30 days
Percentile
4%
Versus all other CVEs
30-day change
+0.04 pp
From 0.11% on 21-09-2026
21-09-202621-10-2026
EPSS score0.16%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Watchguard2 products
- agent< 1.25.03.0000
- watchguard agent≥ 1.0.0.0, < 1.25.03.0000
1 vendor · 2 products
References
2 links- psirt.watchguard.com/CVE-2026-6787Vendor Advisory
- www.watchguard.com/wgrd-psirt/advisory/WGSA-2026-00013Vendor Advisory