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Vulnerability record · CVE-2019-17266 · published 6 October 2019

CVE-2019-17266: Gnome libsoup out-of-bounds read vulnerability

Gnome · Libsoup

libsoup from versions 2.65.1 until 2.68.1 have a heap-based buffer over-read because soup_ntlm_parse_challenge() in soup-auth-ntlm.c does not properly check an NTLM message's length before proceeding with a memcpy.

9.8 CVSS 3.1 Critical EPSS 2.8% · top 14.2% CWE-125 · Out-of-bounds read
9.8CVSS 3.1 base score, v2 7.5
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

libsoup from versions 2.65.1 until 2.68.1 have a heap-based buffer over-read because soup_ntlm_parse_challenge() in soup-auth-ntlm.c does not properly check an NTLM message's length before proceeding with a memcpy.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=941912 Third Party Advisory
https://github.com/Kirin-say/Vulnerabilities/blob/master/CVE-2019-17266_POC.md Third Party Advisory
https://gitlab.gnome.org/GNOME/libsoup/commit/88b7dff4467f4151afae244ea7d1223753cd05ab Third Party Advisory
https://gitlab.gnome.org/GNOME/libsoup/commit/f8a54ac85eec2008c85393f331cdd251af8266ad Third Party Advisory
https://gitlab.gnome.org/GNOME/libsoup/issues/173 Broken LinkIssue TrackingThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2019-17266 Third Party Advisory
https://usn.ubuntu.com/4152-1/ Third Party Advisory
https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1705054.html
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=941912 Third Party Advisory
https://github.com/Kirin-say/Vulnerabilities/blob/master/CVE-2019-17266_POC.md Third Party Advisory
https://gitlab.gnome.org/GNOME/libsoup/commit/88b7dff4467f4151afae244ea7d1223753cd05ab Third Party Advisory
https://gitlab.gnome.org/GNOME/libsoup/commit/f8a54ac85eec2008c85393f331cdd251af8266ad Third Party Advisory
https://gitlab.gnome.org/GNOME/libsoup/issues/173 Broken LinkIssue TrackingThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2019-17266 Third Party Advisory
https://usn.ubuntu.com/4152-1/ Third Party Advisory
https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1705054.html

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Source: NIST National Vulnerability Database (record CVE-2019-17266), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.