What is CVE-2017-11189?

CVE-2017-11189 is a medium-severity vulnerability in Rarzilla Unrar-Free, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2017-07-12.

How severe is CVE-2017-11189?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2017-11189 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

NULL pointer dereference in Rarzilla Unrar-Free

CVE-2017-11189

unrarlib.c in unrar-free 0.0.1 might allow remote attackers to cause a denial of service (NULL pointer dereference and application crash), which could be relevant if unrarlib is used as library code for a long-running application. NOTE: one of the several test cases in the references may be the same as what was separately reported as CVE-2017-14121.

Published 2017-07-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Rarzilla Unrar-Free — versions 0.0.1

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

p1ay8y3ar/cve_

References

github.com/0x09AL/my-exploits/tree/master/pocs/unrar-free/dos (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-11189?: CVE-2017-11189 is a medium-severity vulnerability in Rarzilla Unrar-Free, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2017-07-12.
How severe is CVE-2017-11189?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2017-11189 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.