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CVE-2023-20268

16
FAUCET Score

CVE-2023-20268 is a resource exhaustion vulnerability in Cisco access point software, affecting various Cisco Business and Catalyst wireless products. An unauthenticated, adjacent attacker can exploit this by sending specific wireless packets, leading to resource consumption and potential disruption of the CAPWAP tunnel and wireless client traffic. With a CVSS score of 4.7 (Medium), the attack requires adjacent access and has low impact on availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 8.10.190.0CPE matchmatch criteria
cpe:2.3:o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*
< 17.3.8CPE matchmatch criteria
cpe:2.3:o:cisco:catalyst_9800_embedded_wireless_controller_firmware:*:*:*:*:*:*:*:*
>= 17.4.0, < 17.6.6CPE matchmatch criteria
cpe:2.3:o:cisco:catalyst_9800_embedded_wireless_controller_firmware:*:*:*:*:*:*:*:*
>= 17.8.0, < 17.9.4CPE matchmatch criteria
cpe:2.3:o:cisco:catalyst_9800_embedded_wireless_controller_firmware:*:*:*:*:*:*:*:*
< 10.6.2.0CPE matchmatch criteria
cpe:2.3:o:cisco:business_150ax_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
14.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 20th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-dos-capwap-DDMCZS4m
Vendor Advisory