CVE-2017-14121

Name: CVE-2017-14121
Creator: NVD / NIST
Published: 2017-09-03T20:29:00.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2017-14121 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a crafted RAR archive. NOTE: this may be the same as one of the several test cases in the CVE-2017-11189 references.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL pointer dereference flaw triggered by a crafted RAR archive. NOTE: this may be the same as one of the several test cases in the CVE-2017-11189 references.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

1.12%

62.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Rarlab	Unrar	0.0.1
Debian	Debian Linux	9.0

References

http://www.openwall.com/lists/oss-security/2017/08/20/1Mailing List, Third Party Advisory
https://bugs.debian.org/874061Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00026.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/08/20/1Mailing List, Third Party Advisory
https://bugs.debian.org/874061Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00026.htmlMailing List, Third Party Advisory

Timeline

Published: Sep 3, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-14121?

How severe is CVE-2017-14121?

CVE-2017-14121 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2017-14121?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-14121?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST