CVE-2026-22906: wago 0852-1322_firmware Use of Hard-coded Cryptographic Key
CVSS: 9.8v3.1CriticalDeferred
Published 09-02-2026Last modified 09-02-2026
Vulnerability summary
CVE-2026-22906 is a critical (CVSS 9.8) Use of Hard-coded Cryptographic Key vulnerability in wago 0852-1322_firmware. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28.2% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
0.36%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-02-2026PublishedVulnerability first disclosed.
- 09-02-2026Last modifiedVulnerability information updated.
Description
User credentials are stored using AES‑ECB encryption with a hardcoded key. An unauthenticated remote attacker obtaining the configuration file can decrypt and recover plaintext usernames and passwords, especially when combined with the authentication bypass.
CVSS metrics
2 scores · 2 sources · 1 versionCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.36%
Chance of exploitation in the next 30 days
Percentile
28%
Versus all other CVEs
30-day change
+0.02 pp
From 0.33% on 21-09-2026
21-09-202621-10-2026
EPSS score0.36%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Wago2 products
- 0852-1322_firmware≥ 0.0.0, ≤ 2.64 | 2.64
- 0852-1328_firmware≥ 0.0.0, ≤ 2.64 | 2.64
1 vendor · 2 products