CVE-2022-30333
RARLAB UnRAR before 6.12 on Linux and UNIX allows directory traversal to write to files during an extract (aka unpack) operation, as demonstrated by creating a ~/.ssh/authorized_keys file. NOTE: WinRAR and Android RAR are unaffected.
- CVSS
- 7.5High
- Exploited in the wild
- Yes, in CISA KEV since 9 Aug 2022CISA deadline for US federal agencies: 30 Aug 2022known use in ransomware campaignspublic exploit code
- EPSS
- 99.2%chance of exploitation in the next 30 daystop 0.1% of scored CVEsFIRST score of 11 Nov 2026
- Fix
- Patch availablesee the advisories in the references
- Published
- 9 May 2022analysed here 12 Nov 2026
Do first. Apply updates per vendor instructions. (CISA's required action for this KEV entry)
Summary
Triage
- Attack surface
- Server-side
- Exploitable
- At runtime
- Attack vector
- network
- Can a WAF block it?
- No. See why
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
Products named in our analysis
- rarlab:unrar
- debian:debian_linux
Fix and mitigation
WAF and other mitigations
Can a WAF block it? No. The vulnerability occurs during a file extraction operation on Linux and UNIX systems, which requires local access to run the unrar tool. It is not triggered via web requests, so a web application firewall cannot filter or block it.
Also consider: canonical path validation
Based on an AI reading of the CVE description, and no vendor rule found yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Listed since 9 Aug 2022. Known use in ransomware campaigns.
- CISA due date
- 30 Aug 2022, the remediation deadline for US federal agencies
- CISA required action
- Apply updates per vendor instructions.
- Public exploit code
- Yes: 2 Metasploit modules · 5 GitHub proofs of concept
- CISA SSVC
- exploitation active, automatable yes, technical impact totalAssessed by CISA 4 Aug 2026 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
Metasploit
- exploit/linux/fileformat/unrar_cve_2022_30333exploit, rank excellent
- exploit/linux/http/zimbra_unrar_cve_2022_30333exploit, rank excellent
GitHub proofs of concept
- rbowes-r7/unrar-cve-2022-30333-poc14 stars
- TheL1ghtVn/CVE-2022-30333-PoC13 stars
- aslitsecurity/Zimbra-CVE-2022-303337 stars
- RakhithJK/CVE-2022-303330 stars
and 1 more repositories
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
Timeline
- 9 May 2022Published
- 5 Jul 2022First public exploit or proof of concept57 days later
- 9 Aug 2022Added to CISA KEV (exploited in the wild)35 days later
- 30 Aug 2022CISA remediation due date (US federal agencies)21 days later
- 4 Aug 2026CISA SSVC assessment: exploitation active1,435 days (about 4 years) later
- 1 Oct 2026CVE record last updated59 days later
- 12 Nov 2026Analysed by vulneraibility.com42 days later
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
| Metric | Value | What it means |
|---|---|---|
| Attack vector | NetworkReachable over the internet or any routable network. | Reachable over the internet or any routable network. |
| Attack complexity | LowRepeatable attack, no special conditions. | Repeatable attack, no special conditions. |
| Privileges required | NoneThe attacker needs no prior access. | The attacker needs no prior access. |
| User interaction | NoneNo victim action needed. | No victim action needed. |
| Scope | UnchangedImpact stays within the vulnerable component. | Impact stays within the vulnerable component. |
| Confidentiality | NoneNo data disclosure. | No data disclosure. |
| Integrity | HighComplete modification possible. | Complete modification possible. |
| Availability | NoneThe service stays up. | The service stays up. |
Common questions
Is CVE-2022-30333 being exploited?
Yes. CVE-2022-30333 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2022-30333?
CVE-2022-30333 is rated High with a CVSS score of 7.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2022-30333?
Yes. A fix has been recorded for CVE-2022-30333. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2022-30333 affect?
CVE-2022-30333 affects rarlab:unrar, debian:debian_linux. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
7 references in the CVE record, grouped by the tags the record gives them.
Advisories (1)
- security.gentoo.org /glsa/202309-04
Other links (6)
- rarlab.com /rar_add.htm
- rarlab.com /rar/rarlinux-x32-612.tar.gz
- blog.sonarsource.com /zimbra-pre-auth-rce-via-unrar-0day/
- packetstormsecurity.com /files/167989/Zimbra-UnRAR-Path-Traversal.html
- lists.debian.org /debian-lts-announce/2023/08/msg00022.html
- cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30333
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Metasploit Framework: exploit and scanner modules
- PoC-in-GitHub: GitHub repositories that claim a proof of concept
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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