Improper Input Validation Affecting w3m package, versions <0.5.3-30
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN14-W3M-11771500
- published10 Aug 2025
- disclosed20 Jan 2017
Introduced: 20 Jan 2017
CVE-2016-9436 (opens in a new tab)How to fix?
Upgrade Debian:14 w3m to version 0.5.3-30 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream w3m package and not the w3m package as distributed by Debian.
See How to fix? for Debian:14 relevant fixed versions and status.
parsetagx.c in w3m before 0.5.3+git20161009 does not properly initialize values, which allows remote attackers to crash the application via a crafted html file, related to a <i> tag.
References
- https://security-tracker.debian.org/tracker/CVE-2016-9436
- https://security.gentoo.org/glsa/201701-08
- https://github.com/tats/w3m/commit/33509cc81ec5f2ba44eb6fd98bd5c1b5873e46bd
- https://github.com/tats/w3m/issues/16
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00084.html
- http://www.openwall.com/lists/oss-security/2016/11/18/3
- http://www.securityfocus.com/bid/94407
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9436