CVE-2025-3895 json
Low token entropy in MegaBIP
published 2025-05-23 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-27942
- cvss
- 9.1
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
Token used for resetting passwords in MegaBIP software are generated using a small space of random values combined with a queryable value. It allows an unauthenticated attacker who know user login names to brute force these tokens and change account passwords (including these belonging to administrators). Version 5.20 of MegaBIP fixes this issue.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 17 mo ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.1 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 9.1 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/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 |
Affected products
- Jan Syski MegaBIP
Classification
- Weakness
-
- CWE-334 Small Space of Random Values
References
-
megabip.pl
/index.php?id=24,145
vendor-advisory
-
cert.pl
/en/posts/2025/05/CVE-2025-3893
third-party-advisory
-
gov.pl
/web/cyfryzacja/rekomendacja-pelnomocnika-rzadu-ds-cyberbezpieczenstwa-dotyczaca-biuletynow-informacji-publicz
government-resource
Sources
- CVE List CVE-2025-3895
- NVD CVE-2025-3895
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