CSAIS
CriticalEarly warningRemote code executionUnited states · English

Hackers Actively Exploiting Pre-Auth RCE Flaw in PaperCut Print Software

First seen 27 Aug, 14:00 WIBLatest 12 Sept13 articles · 12 publishers
victim: papercutactor: lockbitVerify evidence
83
Confidence index · preliminarycomputed by the pipeline (V0.7)high
Corroborated by distinct domains
Independent sources
Victim identified
Full text available
Clustering consistency
Status and preventive steps
Early warningMachine output from news coverage; not verified by the public or institutions
Preventive steps
  • Turn on two-step verification for email, banking, and social media.
  • Apply security updates quickly, prioritising flaws that are being exploited.
  • Limit services exposed to the internet and follow vendor advisories.
Literacy audienceChatGPT users in IndonesiaSocial media and messaging usersHomemakers
Literacy topics
  1. Protecting personal data, OTPs, and PINs
  2. Recognising deepfakes and cloned voices
  3. System updates and security patches

Report toPatroli Siber Polri

Extracted claims

Victimconfidence 0.60
PaperCut
Actorconfidence 0.60
LockBit, Clop2 differing values across articles; review needed.
Attack typeconfidence 0.90
Ransomware9 differing values across articles; review needed.
Event datenot found
not identified
LocationUnited states
Target groupIndividuals
Status
  • D1 Machinehigh trust
Conclusion
  • D1 MachineHappened

Source chronology

13 articles, by publication time

27 August 20261 articles

  1. 14:00 WIBFirst reportfull text hashed
    PaperCut warns of NG, MF flaw exploited in zero-day attacksbleepingcomputer.comLockBit, Clop

28 August 20266 articles

  1. 14:00 WIB+24 hfull text hashed
    Hackers Actively Exploiting Pre-Auth RCE Flaw in PaperCut Print Softwareitsecurityguru.org
  2. 14:00 WIB+24 hfull text hashed
    PaperCut NG/MF Critical Zero-Day Exploited in the Wildrapid7.comPaperCut
  3. 14:00 WIB+24 hfull text hashed
    PaperCut Zero-Day Exploited in Attacks, Affecting All NG and MF Versionsthehackernews.comLockBit, Cl0p, Lace Tempest
Show all 13 articlesCollapse

28 August 2026 · continued6 articles

  1. 14:00 WIB+24 hfull text hashed
    PaperCut releases second emergency patch for exploited flawsbleepingcomputer.com

30 August 20261 articles

31 August 20264 articles

  1. 14:00 WIB+96 hfull text hashed
    More Details Emerge on Exploited PaperCut Vulnerabilitiessecurityweek.com
  2. 14:00 WIB+96 hfull text hashed
    PaperCut Zero-Day CVE-2026-81578/82078 Hits CISA KEVshattered.io

12 September 20261 articles

Relations between articles
78 pairs likely independent

Evidence

Hashes prepared13full text hashed 9
first evidence_uida1e7ebd63ad92a0438beaecb
13 of 13 evidence records are in Merkle batches

Flow comparison D1–D4

each flow's preventive output; this is where they differ · D1 changed 3 times · since 29 Sept
D1Machine12 OctD2Public surveynone yetHelp reviewD3Institutionnone yetD4Official recordnone yet
Literacy audienceChatGPT users in IndonesiaSocial media and messaging usersHomemakers–––
Literacy topics
  1. 1.Protecting personal data, OTPs, and PINs
  2. 2.Recognising deepfakes and cloned voices
  3. 3.System updates and security patches
–––
Preventive steps
  • Turn on two-step verification for email, banking, and social media.
  • Apply security updates quickly, prioritising flaws that are being exploited.
  • Limit services exposed to the internet and follow vendor advisories.
Report to Patroli Siber Polri
–––
Institution's reason––––

Columns D2 to D4 fill in once the public survey and institution statements are running.Summary across incidents

Related incidents

semantic similarity of the coverage, across languages