CVE-2025-41730: wago 0852-1322_firmware Stack-based Buffer Overflow
CVSS: 9.8v3.1CriticalAnalyzed
Published 10-12-2025Last modified 18-12-2025
Vulnerability summary
CVE-2025-41730 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in wago 0852-1322_firmware. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 10-12-2025PublishedVulnerability first disclosed.
- 18-12-2025Last modifiedVulnerability information updated.
Description
An unauthenticated remote attacker can abuse unsafe sscanf calls within the check_account() function to write arbitrary data into fixed-size stack buffers which leads to full device compromise.
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
0.43%
Chance of exploitation in the next 30 days
Percentile
36%
Versus all other CVEs
30-day change
0.00 pp
From 0.43% on 21-09-2026
21-09-202621-10-2026
EPSS score0.43%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Wago3 products
- 0852-1322_firmware< 02.64
- 0852-1328_firmware< 02.64
- indsutrial-managed-switches≥ 0.0.0, < 02.64
1 vendor · 3 products
References
1 links- certvde.com/de/advisories/VDE-2025-095Third Party Advisory