7.1

CVE-2023-53540: wifi: cfg80211: reject auth/assoc to AP with our address

Modified
AliasesUBUNTU-CVE-2023-53540DEBIAN-CVE-2023-53540
Published 04-10-2025Last modified 15-10-2026

Vulnerability summary

CVE-2023-53540 is a high (CVSS 7.1) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.20%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 11
SUSE-SU-2025:21040-1SUSE-SU-2025:21052-1SUSE-SU-2025:21056-1SUSE-SU-2025:21064-1SUSE-SU-2025:4057-1SUSE-SU-2025:4128-1

Timeline

  1. 04-10-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: reject auth/assoc to AP with our address If the AP uses our own address as its MLD address or BSSID, then clearly something's wrong. Reject such connections so we don't try and fail later.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.19% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu124 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 19957bb399e2722719c0e20c9ae91cf8b6aaff04, < 676a423410131d111a264d29aecbe6aadd57fb22 | ≥ 19957bb399e2722719c0e20c9ae91cf8b6aaff04, < 07added2c6cd63de047bc786b39436322abb67c0 | ≥ 19957bb399e2722719c0e20c9ae91cf8b6aaff04, < 5d4e04bf3a0f098bd9033de3a5291810fa14c7a6 | 2.6.32
  • linux_kernel≥ 2.6.32, < 6.1.55 | ≥ 6.2, < 6.5.5
Debian1 product
  • linux< 6.1.55-1 | < 6.5.6-1

3 vendors · 127 products

References

7 links