CVE-2026-6180PaperCut MF: Card truncation on HP readers
Updated under an hour ago ()
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It affects PaperCut NG/MF and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A race condition exists in PaperCut MF when processing badge-swipe data from certain HP multifunction devices. Under specific network conditions involving dropped packets and out-of-order sequence counters, the server may incorrectly process fragmented data chunks. If a sequence reset notification fails to reach the server, the server may reject the initial data chunk while erroneously accepting subsequent chunks before a connection reset completes. This leads to the registration of a truncated badge ID string. While this typically results in an authentication failure, the vulnerability is compounded in environments utilizing custom badge-ID post-processing scripts. In such configurations, the truncated string may be transformed into a valid ID belonging to a different user, leading to unauthorized session establishment (Incorrect User Login) on the device.
- CVSS
- 4.1 MEDIUM (v4.0, CNA)CVSS:4.0/AV:P/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:N
- Weakness (CWE)
- CWE-367, CWE-20
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- PaperCut
- NVD analysis
- Analyzed
- Record last updated
- May 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
PaperCut PaperCut NG/MF papercut:ng_mf (from the name) | before 24.1.9; before 25.0.10 | CNA record |
papercut papercut_mf papercut:papercut_mf | before 24.1.9; from 25.0.2 before 25.0.10 | NVD |
papercut papercut_ng papercut:papercut_ng | before 24.1.9; from 25.0.2 before 25.0.10 | NVD |
References
- https://www.papercut.com/kb/Main/papercut-ng-mf-and-papercut-hive-security-bulletin-may-2026/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.