NVD / CVE Program· CNA mitre

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 demonst

Noroxi assessment

Priority: Now (action score 90/100)

CISA has confirmed exploitation in the wild (Aug 9, 2022); it is known to be used in ransomware campaigns. Remediation deadline for US federal agencies: Aug 30, 2022.
A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
Probability of exploitation in the next 30 days: 99.2% (FIRST EPSS); higher than 99.9% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: rar (Debian:10) 2:6.20-0.1~deb10u1; rar (Debian:12) 2:6.20~b1-0.1; unrar-nonfree (Debian:12) 1:6.1.7-1.
Severity is disputed: the assigning authority (CNA) scores it 9.8, NVD 7.5.

Patch today or shut off access. Upgrade to rar (Debian:10) 2:6.20-0.1~deb10u1; rar (Debian:12) 2:6.20~b1-0.1; unrar-nonfree (Debian:12) 1:6.1.7-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

HighCVSS 7.5 · v3.1KEVWeaponized Fix available

Published: May 9, 2022
Updated: Oct 2, 2026
EPSS: 99.2% · 99th percentile
CWE: CWE-22

Report tools

JSON

Action score

Now

Patch today or shut off access.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 30 / 30 · 99.2%

CISA SSVC decision

Exploitation: active
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 7.5
CNA · mitre: 9.8; 2.3 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Aug 9, 2022. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Aug 30, 2022.

Known to be used in ransomware campaigns.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
rarlab	unrar	cpe:2.3:a:rarlab:unrar
linux	linux kernel	cpe:2.3:o:linux:linux_kernel
opengroup	unix	cpe:2.3:o:opengroup:unix
debian	debian linux	cpe:2.3:o:debian:debian_linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

debian debian linux10.0
rarlab unrarbefore 6.12

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:10	rar	before 2:6.20-0.1~deb10u1	2:6.20-0.1~deb10u1
Debian:12	rar	before 2:6.20~b1-0.1	2:6.20~b1-0.1
Debian:12	unrar-nonfree	before 1:6.1.7-1	1:6.1.7-1
SUSE:Linux Enterprise Software Development Kit 12 SP5	unrar	before 5.6.1-4.8.1	5.6.1-4.8.1

Same product

rarlab: all records

Other highest-scoring records for the same primary product.

CVE-2017-12942libunrar.a in UnRAR before 5.5.7 has a buffer overflow in the Unpack::LongLZ function.
40Plan
CVE-2017-12941libunrar.a in UnRAR before 5.5.7 has an out-of-bounds read in the Unpack::Unpack20 function.
40Plan
CVE-2017-12940libunrar.a in UnRAR before 5.5.7 has an out-of-bounds read in the EncodeFileName::Decode call within the Archive::ReadHeader15 function.
40Plan

Published before and after this one in the same product

← EarlierCVE-2017-20006Jun 30, 2021 · UnRAR 5.6.1.2 and 5.6.1.3 has a heap-based buffer overflow in Unpack::CopyString (called from Unpack::Unpack5 and CmdExtract::ExtractCurrent
31Monitor
← EarlierCVE-2018-25018Jun 30, 2021 · UnRAR 5.6.1.7 through 5.7.4 and 6.0.3 has an out-of-bounds write during a memcpy in QuickOpen::ReadRaw when called from QuickOpen::ReadNext.
31Monitor
Later →CVE-2022-48579Aug 7, 2023 · UnRAR before 6.2.3 allows extraction of files outside of the destination folder via symlink chains.
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
debian:rar	2:6.20~b1-0.1 · Debian:12	Package registry (OSV)
debian:unrar-nonfree	1:6.1.7-1 · Debian:12	Package registry (OSV)
suse:unrar	5.6.1-4.8.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5	Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Metasploit module ×2
Proof-of-concept repository on GitHub ×5

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Metasploit module	exploit/linux/fileformat/unrar_cve_2022_30333UnRAR Path Traversal (CVE-2022-30333)exploit	2022-06-28
Metasploit module	exploit/linux/http/zimbra_unrar_cve_2022_30333UnRAR Path Traversal in Zimbra (CVE-2022-30333)exploit	2022-06-28
Proof-of-concept repository on GitHub	stars:13	2022-07-05
Proof-of-concept repository on GitHub	stars:14	2022-07-15
Proof-of-concept repository on GitHub	stars:7	2022-07-26
Proof-of-concept repository on GitHub	stars:0	2022-08-15
Proof-of-concept repository on GitHub	stars:0	2024-06-10

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

PublishedMay 9, 2022
MetasploitJun 28, 2022+50 d
First PoCJul 5, 2022+57 d
CISA KEVAug 9, 2022+92 d
TodayNov 5, 2026+1641 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: high · data or configuration can be modified
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: None

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:48 PM UTC

For records you follow, these changes also arrive as notifications. →

References

lists.debian.org/debian-lts-announce/2023/08/msg00022.html

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

What does it mean in your environment?

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Data sources and verification

CNA: mitre

CVE.org (CNA)Oct 1, 2026, 7:08 PM UTC
CISA ADPOct 1, 2026, 7:08 PM UTC
NVDOct 2, 2026, 2:54 PM UTC
FIRST EPSSOct 25, 2026, 12:00 AM UTC
OSV / GHSANov 5, 2026, 3:18 AM UTC
MetasploitNov 5, 2026, 3:17 AM UTC
PoC-in-GitHubNov 5, 2026, 3:18 AM UTC

Each line is when that source was last processed for this record.