Płatnik: Weak Encoding for Password
CVE-2026-110971 is a high-severity weak encoding for password vulnerability in Płatnik from Zakład Ubezpieczeń Społecznych, with a CVSS 4.0 base score of 7.7 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected Płatnik versions: 10.02.002 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.17% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Płatnik you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Zakład Ubezpieczeń Społecznych | Płatnik | 10.02.002 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Attack requirements
- NoneThe attack does not depend on a particular deployment or configuration.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Confidentiality (vulnerable system)
- HighSerious loss of confidentiality on the vulnerable system.
- Integrity (vulnerable system)
- HighSerious loss of integrity on the vulnerable system.
- Availability (vulnerable system)
- HighSerious loss of availability on the vulnerable system.
- Confidentiality (other systems)
- NoneNo loss of confidentiality on systems beyond the vulnerable one.
- Integrity (other systems)
- NoneNo loss of integrity on systems beyond the vulnerable one.
- Availability (other systems)
- NoneNo loss of availability on systems beyond the vulnerable one.
Vector: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/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. Scored by CNA (cert.pl).
Official description
Use of a weak password encoding algorithm in Płatnik software allows a user who obtains encoded password to easily decode it. This issue was fixed in metric 334 in version 10.02.002.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Weak Encoding for Password
The product uses a weak or trivial encoding for a password.
How developers prevent this class of flaw
- Passwords should be encrypted with keys that are at least 128 bits in length for adequate security.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in Płatnik
- 8.6 High severity
Recent Weak Encoding for Password vulnerabilities
- 7.3 High severity
- 7.5 High severity
- 8.2 High severity
- 8.8 High severity
- 8.1 High severity
- 7.5 High severity
Spotted an error? Tell us.