CVE-2020-25645

Name: CVE-2020-25645
Creator: NVD / NIST
Published: 2020-10-13T20:15:12.57+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.40%

Last modified Jun 17, 2026

CVE-2020-25645 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted. EPSS estimates a 2.40% chance of exploitation in the next 30 days.

Description

A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.40%

81.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 5.9.0
Linux	Linux Kernel	5.9.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Netapp	Solidfire \& Hci Management Node	All versions
Netapp	Solidfire \& Hci Storage Node	All versions
Opensuse	Leap	15.1
Opensuse	Leap	15.2
Netapp	Hci Compute Node Bios	All versions
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.htmlThird Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1883988Exploit, Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00028.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20201103-0004/Third Party Advisory
https://www.debian.org/security/2020/dsa-4774Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.htmlMailing List, Third Party Advisory
http://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.htmlThird Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1883988Exploit, Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00028.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20201103-0004/Third Party Advisory
https://www.debian.org/security/2020/dsa-4774Third Party Advisory

Timeline

Published: Oct 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25645?

How severe is CVE-2020-25645?

CVE-2020-25645 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25645?

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-2020-25645?

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

Scan your code now

Source: NVD / NIST