critical Known exploitedREV. 01
CVE-2022-41352Zimbra Collaboration — cpio Arbitrary File Upload
Zimbra Collaboration 8.8.15 and 9.0 let an attacker upload arbitrary files through amavis via a cpio loophole, which can give incorrect access to other users' accounts. Ransomware campaigns are known to use this flaw, and public exploit code exists.
Read the risk
THE VITAL STATS- CVSS score
- 9.8/ 10 CVSS v3.1
- EPSS probability
- 95.5% Likelihood of exploitation
- Attack complexity
- Low Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2022-09-26
- Added to KEV
- 2022-10-20
- CISA due date
- 2022-11-10
- Exploit published
- Yes
- Confidence
- high
- Kill chain
- initial access
- MITRE ATT&CK
- T1190
- Severity
- critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attacker needsThe ability to reach amavis on a Zimbra server that uses cpio rather than pax.
Behind the card
5 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisoryforums.zimbra.orgforums.zimbra.org
- 04Vendor advisorywiki.zimbra.comwiki.zimbra.com
- 05Vendor advisorywiki.zimbra.comwiki.zimbra.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, published_at, references | nvd.nist.gov | 2026-11-05 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added, exploitation.kev_due | cisa.gov | 2026-11-05 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-11-05 | scrty-crds-pipeline/0.1 | high |
| title, subtitle, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-11-05 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
History unavailable — this build has no Git history for the card file.