CVE-2018-6197

Name: CVE-2018-6197
Creator: NVD / NIST
Published: 2018-01-25T03:29:00.603+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.47%

Last modified Jun 17, 2026

CVE-2018-6197 is a vulnerability of currently unknown severity. w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.. EPSS estimates a 4.47% chance of exploitation in the next 30 days.

Description

w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.

Metrics

EPSS Probability

4.47%

90.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Tats	W3m	<= 0.5.3
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10

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

Timeline

Published: Jan 25, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-6197?

w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c.

How severe is CVE-2018-6197?

Severity scoring for CVE-2018-6197 is pending analysis. The EPSS model estimates a 4.47% probability of exploitation in the next 30 days.

How do I fix CVE-2018-6197?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-6197?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST