CVE-2020-6750

Name: CVE-2020-6750
Creator: NVD / NIST
Published: 2020-01-09T20:15:11.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 2.17%

Last modified Jun 17, 2026

CVE-2020-6750 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. EPSS estimates a 2.17% chance of exploitation in the next 30 days.

Description

GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. The greatest security relevance is in use cases where a proxy is used to help with privacy/anonymity, even though there is no technical barrier to a direct connection. NOTE: versions before 2.60 are unaffected.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

2.17%

80.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Gnome	Glib	>= 2.60.0, <= 2.62.4
Fedoraproject	Fedora	30
Fedoraproject	Fedora	31

References

https://bugzilla.suse.com/show_bug.cgi?id=1160668Issue Tracking, Third Party Advisory
https://gitlab.gnome.org/GNOME/glib/issues/1989Exploit, Issue Tracking, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5RIFEDSRJ4P3WFCMDUOFQ2LEILZLMDW7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJMLGW55HOQXHMTIPH2PWXFRBNBWVO4W/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MEM7MMAXMWCDPUH4MTUZ763MBB64RRLJ/
https://security.netapp.com/advisory/ntap-20200127-0001/Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1160668Issue Tracking, Third Party Advisory
https://gitlab.gnome.org/GNOME/glib/issues/1989Exploit, Issue Tracking, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5RIFEDSRJ4P3WFCMDUOFQ2LEILZLMDW7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJMLGW55HOQXHMTIPH2PWXFRBNBWVO4W/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MEM7MMAXMWCDPUH4MTUZ763MBB64RRLJ/
https://security.netapp.com/advisory/ntap-20200127-0001/Third Party Advisory

Timeline

Published: Jan 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6750?

How severe is CVE-2020-6750?

CVE-2020-6750 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 2.17% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6750?

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-2020-6750?

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

Scan your code now

Source: NVD / NIST