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VulnerabilityPublished Updated

CVE-2024-33899: RARLAB WinRAR · Improper Neutralization of Escape, Meta, or Control Sequences

Source CVE Database V5

0

Not known to be exploited · CVSS 7.1 High · fixed in 7.00 : patch affected systems soon.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 7.00
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Apr 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

Organizations should immediately upgrade WinRAR to version 7.00 or later on Linux and UNIX platforms once available. If you cannot patch yet, users should avoid opening RAR archives from untrusted or unknown sources. Implement strict input validation and scanning of archive files using security tools that can detect malicious ANSI escape sequences. Employ terminal emulators or shells that can limit or disable the processing of ANSI escape sequences to reduce the risk of spoofing. Educate users about the risks of interacting with suspicious archives and the importance of verifying sources. Network-level protections such as email filtering and endpoint security solutions should be enhanced to detect and block malicious archive files. Monitoring and logging terminal sessions can help detect anomalous behavior indicative of exploitation attempts. Finally, consider isolating systems that handle untrusted archives to minimize potential impact.

Description

RARLAB WinRAR before 7.00, on Linux and UNIX platforms, allows attackers to spoof the screen output, or cause a denial of service, via ANSI escape sequences.

References

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