CVE-2017-14121: n/a vulnerability

CVE-2017-14121: The DecodeNumber function in unrarlib.c in unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a NULL po...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 19:20 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2017-14121 is a crash bug in unrar 0.0.1, also called unrar-free or unrar-gpl. A specially crafted RAR archive can trigger a NULL pointer dereference. The main business concern is availability loss in systems that automatically unpack untrusted archives. Exposure is most likely where unrar-free, unrar-gpl, or unrar 0.0.1 processes user-supplied RAR archives, especially mail gateways, upload scanners, extraction services, and batch workflows. Treat this as targeted availability risk, not confirmed remote system compromise. Prioritize patching where RAR extraction is automated or exposed to customers, partners, or email attachments. Mitigation focus: Check Debian and vendor package guidance for fixed unrar-free builds.; Update vulnerable unrar-free or unrar-gpl packages through trusted repositories.; Restrict automatic extraction of untrusted RAR archives until patched..

Prepared: Jun 12, 2026, 21:19 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 3, 2017, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugs.debian.org/874061CVE reference · x_refsource_MISC
[debian-lts-announce] 20210218 [SECURITY] [DLA 2567-1] unrar-free security updateCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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