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CVE-2026-81578
CWE-305
Critical
103.7
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
Source: NVD
Signals
- CVSS
- 9.8
- Critical · v3.1
- EPSS
- 84.59%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Aug 2026
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-305
- Published
- 28 Aug 2026
- Last modified 14 Sept 2026
How to read these signals: RPS · EPSS · CISA KEV · Data sources
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Data as of 7 Oct 2026, 05:16 UK time