Threats / RARLAB / CVE-2022-30333
CVE-2022-30333
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
RARLAB UnRAR vulnerability
RARLAB UnRAR on Linux and UNIX contains a directory traversal vulnerability allowing attackers to write arbitrary files during extract operations via path manipulation.
Verdict
Today item, not a backlog item.
A directory traversal flaw in UnRAR permits attackers to escape intended extraction directories and overwrite files on affected systems. The vulnerability has been actively exploited in ransomware campaigns and carries high exploitation likelihood.
CISA KEV Yes · 2022-08-093Ransomware use Flagged3EPSS 0.98975 (verify live)4Exploit Weaponized · public PoC5
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
6 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-08-09), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.98975 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: RARLAB, UnRAR. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-22 Path Traversal, CWE-59 Link Following — weakness family: Path traversal / file.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious RAR archive with path traversal sequences that bypass directory restrictions during extraction.
Business
Attackers gain ability to place malicious payloads or overwrite critical system files on customer endpoints.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I distribute the weaponized archive through email, downloads, or file-sharing platforms targeting UnRAR users.
Business
Organizations face widespread compromise risk as users unknowingly extract archives containing traversal payloads.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute ransomware deployment by writing encrypted payloads and ransom notes to arbitrary filesystem locations.
Business
Ransomware campaigns leverage this vector to establish persistence and encrypt critical business data at scale.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05