w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
http://www.securityfocus.com/bid/102846
https://github.com/tats/w3m/commit/7fdc83b0364005a0b5ed869230dd81752ba022e8
https://github.com/tats/w3m/issues/89
Source: MITRE
Published: 2018-01-25
Updated: 2019-04-05
Type: CWE-476
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH