CVE-2023-25525: NVIDIA Cumulus Linux contains a vulnerability in forwarding where a VxLAN-encapsulated IPv6 packet received on

Q: How do I fix CVE-2023-25525?

cumulus linux: upgrade to 5.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-25525 being exploited?

CVE-2023-25525 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-25525 affect?

CVE-2023-25525 affects cumulus linux. Severity is high (CVSS 7.5). NVIDIA Cumulus Linux contains a vulnerability in forwarding where a VxLAN-encapsulated IPv6 packet received on an SVI interface with DMAC/DIPv6 set to the link-local address of the SVI interface may be incorrectly forwarded. A successful ex

Q: How urgent is CVE-2023-25525?

Priority 48/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADE

CVE-2023-25525 is a high-severity flaw (CVSS 7.5) affecting cumulus linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NVIDIA Cumulus Linux contains a vulnerability in forwarding where a VxLAN-encapsulated IPv6 packet received on an SVI interface with DMAC/DIPv6 set to the link-local address of the SVI interface may be incorrectly forwarded. A successful exploit may lead to information disclosure.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-284
Published	2023-09-20
Last modified	2026-06-17

Publisher (CNA): NVIDIA Corporation · Vendor: nvidia

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-20 01:15 UTCPublished CVE record published
2026-06-17 05:41 UTCUpdated Record last modified

nvidia cumulus linux UPGRADE

Affected: < 5.6.0

Fixed in: 5.6.0

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-25525?

cumulus linux: upgrade to 5.6.0. Exact commands for each OS are on this page.

Is CVE-2023-25525 being exploited?

CVE-2023-25525 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-25525 affect?

CVE-2023-25525 affects cumulus linux. Severity is high (CVSS 7.5). NVIDIA Cumulus Linux contains a vulnerability in forwarding where a VxLAN-encapsulated IPv6 packet received on an SVI interface with DMAC/DIPv6 set to the link-local address of the SVI interface may be incorrectly forwarded. A successful ex

How urgent is CVE-2023-25525?

Priority 48/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

NVIDIA vulnerabilities

Related CVEs

CVE-2026-24183 HIGH 7.8 MITIGATE NVIDIA Cumulus Linux contains a vulnerability in the user management component, where an unprivileged user cou
CVE-2025-33181 HIGH 7.3 UPGRADE UPGRADE NVIDIA Cumulus Linux and NVOS products contain a vulnerability in the NVUE interface, where a low-privileged u
CVE-2025-33180 HIGH 8.0 UPGRADE UPGRADE NVIDIA Cumulus Linux and NVOS products contain a vulnerability in the NVUE interface, where a low-privileged u
CVE-2025-33179 HIGH 8.0 UPGRADE UPGRADE NVIDIA Cumulus Linux and NVOS products contain a vulnerability in the NVUE interface, where a low-privileged u
CVE-2023-25526 MEDIUM 6.5 UPGRADE NVIDIA Cumulus Linux contains a vulnerability in neighmgrd and nlmanager where an attacker on an adjacent netw

References

← Back to latest CVEs