CRITICALCVSS 9.1Vulnerability
CVE-2026-82078
PaperCut NG/MF contains an unsafe reflection vulnerability that allows an attacker to manipulate system configuration parameters and execute arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process. This vulnerability can be chained with CVE-2026-81578.
Properties
- severity
- CRITICAL
- vulnerabilityName
- PaperCut NG/MF Unsafe Reflection Vulnerability
- product
- NG/MF
- cvss_severity
- CRITICAL
- cvss_score
- 9.1
- epss_score
- 0.63532
- dueDate
- 2026-09-14
- retrieved_at
- 2026-10-14T08:32:14+00:00
- requiredAction
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discon
- dateAdded
- 2026-08-31
- last_source
- FIRST EPSS
- score
- 9.1
- cve_id
- CVE-2026-82078
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- signal_observed_at
- 2026-09-11T17:54:47+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- vendorProject
- PaperCut
- published_at
- 2026-08-28T16:18:31.240
- last_modified
- 2026-09-14T00:16:56.777
- epss_percentile
- 0.992
Related Entities (12)
MENTIONED_IN (4)
→[Campaign]PaperCut MF Zero-Day Intrusion: Java Loader, Web Shell, and AdaptixC2 via CVE-2026-82078 and CVE-2026-81578
→[Campaign]GhostCode: Dissecting a Novel Device Code Phishing Kit
→[Campaign]Death by a Thousand PaperCuts: AI-Driven Exploitation at Scale
→[Campaign]Agents Gone Wild: An AI-Orchestrated Global Campaign Against PaperCut NG/MF
INVOLVES (1)
←[Signal]
AFFECTS_PRODUCT (2)
→[Product]
→[Product]
HAS_WEAKNESS (1)
→[Weakness]Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
DESCRIBED_BY (1)
→[Source]NVD
ENRICHED_BY (1)
→[Source]FIRST EPSS
KNOWN_EXPLOITED (1)
→[Source]CISA KEV
DESCRIBES (1)
←[KEVEntry]PaperCut NG/MF Unsafe Reflection Vulnerability
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