CVE-2018-6197
w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.
02 Description
w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 4.39% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 90.8% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-01-25 03:00Z8 YR AGO
- Last updated
- 2024-08-05 05:54Z2 YR AGO
- Reserved
- 2018-01-24
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 7a58d8f15afe4ac67f7da59743cb96f734e9371b9fd78c76d43df7413899a78e
05 Affected products
06 References
- www.securityfocus.com102846http://www.securityfocus.com/bid/102846
- usn.ubuntu.comUSN-3555-2https://usn.ubuntu.com/3555-2/
- github.comhttps://github.com/tats/w3m/issues/89
- usn.ubuntu.comUSN-3555-1https://usn.ubuntu.com/3555-1/
- github.comhttps://github.com/tats/w3m/commit/7fdc83b0364005a0b5ed869230dd81752ba022e8
- lists.opensuse.orgopenSUSE-SU-2019:1142http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
- lists.debian.org[debian-lts-announce] 20200430 [SECURITY] [DLA 2195-1] w3m security updatehttps://lists.debian.org/debian-lts-announce/2020/04/msg00025.html
07 Fixed in
Debian 12
- w3m Fixed in 0.5.3-36
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- w3m Fixed in 0.5.3-36
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- w3m Fixed in 0.5.3-36
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- w3m Fixed in 0.5.3-15ubuntu0.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- w3m Fixed in 0.5.3-26ubuntu0.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.