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CVE-2024-20271A vulnerability in the IP packet processing of Cisco Access Point (AP) Software could allow an unauthenticated, remote attacker to cause a…

Description

A vulnerability in the IP packet processing of Cisco Access Point (AP) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of certain IPv4 packets. An attacker could exploit this vulnerability by sending a crafted IPv4 packet either to or through an affected device. A successful exploit could allow the attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To successfully exploit this vulnerability, the attacker does not need to be associated with the affected AP. This vulnerability cannot be exploited by sending IPv6 packets.

Timeline

  1. ID reserved

    By cisco

  2. · 5 months later

    Published

  3. · 4 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2024-20271, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1High8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVDNVD · Analyzed3.1High8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.63% · top 49% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.

Affected products

  • Cisco · Cisco Aironet Access Point Software

    • affected 8.2.100.0
    • affected 8.2.130.0
    • affected 8.2.111.0
    • affected 8.2.110.0
    • affected 8.2.121.0
    • affected 8.2.141.0
    • affected 8.2.151.0
    • affected 8.2.160.0
    • affected 8.2.161.0
    • affected 8.2.164.0
    • affected 8.2.166.0
    • affected 8.2.170.0
    • affected 8.2.163.0
    • affected 8.3.102.0
    • affected 8.3.111.0
    • affected 8.3.112.0
    • affected 8.3.121.0
    • affected 8.3.122.0
    • affected 8.3.130.0
    • affected 8.3.131.0
    • affected 8.3.132.0
    • affected 8.3.133.0
    • affected 8.3.140.0
    • affected 8.3.141.0
    • affected 8.3.143.0
    • affected 8.3.150.0
    • affected 8.3.108.0
    • affected 8.3.90.53
    • affected 8.3.104.46
    • affected 8.3.200.200
    • affected 8.3.104.64
    • affected 8.3.15.165
    • affected 8.3.90.11
    • affected 8.3.135.0
    • affected 8.3.104.14
    • affected 8.3.90.36
    • affected 8.3.15.142
    • affected 8.3.104.37
    • affected 8.3.15.117
    • affected 8.3.15.120
    • and 63 more

  • Cisco · Cisco Business Wireless Access Point Software

    • affected 10.0.1.0
    • affected 10.0.2.0
    • affected 10.1.1.0
    • affected 10.1.2.0
    • affected 10.2.1.0
    • affected 10.2.2.0
    • affected 10.3.1.0
    • affected 10.3.1.1
    • affected 10.3.2.0
    • affected 1.0.0.13
    • affected 1.0.0.16
    • affected 1.0.0.3
    • affected 1.0.0.39
    • affected 1.0.0.4
    • affected 1.0.0.5
    • affected 1.0.0.7
    • affected 1.0.1.2
    • affected 1.0.1.3
    • affected 1.0.1.4
    • affected 1.0.1.5
    • affected 1.0.1.6
    • affected 1.0.1.7
    • affected 1.0.2.0
    • affected 1.0.2.13
    • affected 1.0.2.14
    • affected 1.0.2.15
    • affected 1.0.2.16
    • affected 1.0.2.17
    • affected 1.0.2.2
    • affected 1.0.2.8
    • affected 1.0.3.1
    • affected 1.0.4.4
    • affected 1.0.4.3
    • affected 1.0.6.6
    • affected 1.0.3.4
    • affected 1.0.6.8
    • affected 1.0.6.2
    • affected 1.0.2.3
    • affected 1.0.5.3
    • affected 1.0.1.10
    • and 39 more

  • Cisco · Cisco Aironet Access Point Software (IOS XE Controller)

    • affected 16.10.1e
    • affected 16.10.1
    • affected 17.1.1t
    • affected 17.1.1s
    • affected 17.1.1
    • affected 16.11.1a
    • affected 16.11.1
    • affected 16.11.1c
    • affected 16.11.1b
    • affected 16.12.1s
    • affected 16.12.4
    • affected 16.12.1
    • affected 16.12.2s
    • affected 16.12.1t
    • affected 16.12.4a
    • affected 16.12.5
    • affected 16.12.3
    • affected 16.12.6
    • affected 16.12.8
    • affected 16.12.7
    • affected 16.12.6a
    • affected 17.3.1
    • affected 17.3.2a
    • affected 17.3.3
    • affected 17.3.4
    • affected 17.3.5
    • affected 17.3.2
    • affected 17.3.4c
    • affected 17.3.5a
    • affected 17.3.5b
    • affected 17.3.6
    • affected 17.2.1
    • affected 17.2.1a
    • affected 17.2.3
    • affected 17.2.2
    • affected 17.5.1
    • affected 17.4.1
    • affected 17.4.2
    • affected 17.6.1
    • affected 17.6.2
    • and 13 more

What to do

Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

References

References1

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2024-20271 badge
[![CVE-2024-20271](https://cveledger.app/badge/CVE-2024-20271.svg)](https://cveledger.app/cve/CVE-2024-20271)

Record last updated .