HOME VULNERABILITIESCVE-2020-25645

HIGH

CVE-2020-25645

CWE-319Published: October 13, 2020· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official 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.

Technical Analysis

CVE-2020-25645 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

Debian1 product(s)

debian linux

Linux1 product(s)

linux kernel

netapp4 product(s)

solidfire \& hci management nodesolidfire \& hci storage nodehci compute node bioshci compute node

openSUSE1 product(s)

leap

Source: NVD CPE · 14 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1883988

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1883988

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html

ADVISORYhttp://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.html

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/10/msg00028.html

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

ADVISORYhttps://security.netapp.com/advisory/ntap-20201103-0004/

ADVISORYhttps://www.debian.org/security/2020/dsa-4774

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html

ADVISORYhttp://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.html

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/10/msg00028.html

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

ADVISORYhttps://security.netapp.com/advisory/ntap-20201103-0004/

ADVISORYhttps://www.debian.org/security/2020/dsa-4774

All References (16)

→

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

Quick Facts

CVE IDCVE-2020-25645

CVSS Score7.5 / 10

SeverityHIGH

WeaknessCWE-319

CISA KEVNo

Affected5 vendor(s)

PublishedOct 13, 2020

Related CVEs (CWE-319)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2020-25645 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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