VulnerabilityModified
CVE-2018-6197
w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.
HIGH 7.5EPSS 4.39%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.39% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- tats/w3m · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS 4.4% 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://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
- http://www.securityfocus.com/bid/102846Third Party Advisory, VDB Entry
- https://github.com/tats/w3m/commit/7fdc83b0364005a0b5ed869230dd81752ba022e8Patch, Third Party Advisory
- https://github.com/tats/w3m/issues/89Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/04/msg00025.html
- https://usn.ubuntu.com/3555-1/Third Party Advisory
- https://usn.ubuntu.com/3555-2/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
- http://www.securityfocus.com/bid/102846Third Party Advisory, VDB Entry
- https://github.com/tats/w3m/commit/7fdc83b0364005a0b5ed869230dd81752ba022e8Patch, Third Party Advisory
- https://github.com/tats/w3m/issues/89Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/04/msg00025.html
- https://usn.ubuntu.com/3555-1/Third Party Advisory
- https://usn.ubuntu.com/3555-2/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.