How severe is CVE-2017-11189?

CVE-2017-11189 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-11189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11189?

CVE-2017-11189 affects Rarzilla Unrar-free. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11189?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-11189 published?

CVE-2017-11189 was published on 2017-07-12 and last updated on 2026-06-17.

CVE-2017-11189

CVE-2017-11189 is a medium-severity vulnerability in Rarzilla Unrar-free with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Rarzilla Unrar-free
Published: 2017-07-12
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2017-11189?: CVE-2017-11189 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-11189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11189?: CVE-2017-11189 affects Rarzilla Unrar-free. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-11189 published?: CVE-2017-11189 was published on 2017-07-12 and last updated on 2026-06-17.

References

https://github.com/0x09AL/my-exploits/tree/master/pocs/unrar-free/dos

Affected products (1)

cpe:2.3:a:rarzilla:unrar-free:0.0.1:*:*:*:*:*:*:*

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