CVE-2023-20176
A vulnerability in the networking component of Cisco access point (AP) software could allow an unauthenticated, remote attacker to cause a…
- 5.8MediumCVSS base score
- 0.87%Exploitation in 30 daysEPSS · top 41% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in the networking component of Cisco access point (AP) software could allow an unauthenticated, remote attacker to cause a temporary disruption of service. This vulnerability is due to overuse of AP resources. An attacker could exploit this vulnerability by connecting to an AP on an affected device as a wireless client and sending a high rate of traffic over an extended period of time. A successful exploit could allow the attacker to cause the Datagram TLS (DTLS) session to tear down and reset, causing a denial of service (DoS) condition.
Timeline
ID reserved
By cisco
- 11 months later
· 11 months later
Published
- 10 months later
· 10 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Medium5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L |
| NVDNVD · Modified | 3.1 | High8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.87% · top 41% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Affected products
Cisco · Cisco Aironet Access Point Software
- affected 8.10.170.0
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 17.3.2
- affected 17.3.4c
- affected 17.3.5a
- 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
- affected 17.6.3
- affected 17.6.4
- affected 17.6.5
- and 2 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
- cisco-sa-click-ap-dos-wdcXkvnQ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-24355 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-20176)Record last updated .