CVE-2023-25525Network attack vector

Information disclosure via misforwarded encapsulated IPv6 packets

Published Sep 20, 2023 · Updated Sep 24, 2024

Improper access control in NVIDIA Cumulus Linux before 5.6.0 allows remote attackers to disclose information via crafted IPv6 packets. The forwarding path incorrectly handles a VxLAN-encapsulated IPv6 packet received on an SVI when both its destination MAC and IPv6 address target the SVI link-local address. Exploitation requires network access to the affected VxLAN and SVI configuration and exposes information through unintended forwarding.

CVSS severity7.5
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in NVIDIA Cumulus Linux before 5.6.0 allows remote attackers to disclose information via crafted IPv6 packets. The forwarding path incorrectly handles a VxLAN-encapsulated IPv6 packet received on an SVI when both its destination MAC and IPv6 address target the SVI link-local address. Exploitation requires network access to the affected VxLAN and SVI configuration and exposes information through unintended forwarding.

The record

CVE
CVE-2023-25525
Published
Sep 20, 2023
Updated
Sep 24, 2024
Vendor
DPDK Project
Product
Cumulus Linux
Classifications
CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions prior to 5.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DPDK Project · Cumulus Linuxversion=All versions prior to 5.6.0

Published CVSS scores

7.5NVIDIA CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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