CVE-2016-9429
Buffer overflow in the formUpdateBuffer function in w3m allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted HTML page.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.78%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Buffer overflow in the formUpdateBuffer function in w3m allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted HTML page.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 3.78% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- tats/w3m
- Source
- cve@mitre.org
EPSS 3.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2016/11/18/3Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/94407
- https://github.com/tats/w3m/blob/master/ChangeLogIssue Tracking, Patch
- https://github.com/tats/w3m/issues/29Issue Tracking, Patch
- https://security.gentoo.org/glsa/201701-08
- http://www.openwall.com/lists/oss-security/2016/11/18/3Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/94407
- https://github.com/tats/w3m/blob/master/ChangeLogIssue Tracking, Patch
- https://github.com/tats/w3m/issues/29Issue Tracking, Patch
- https://security.gentoo.org/glsa/201701-08
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.