CVE-2023-20056
CVE-2023-20056 is a medium-severity vulnerability in Cisco Wireless Lan Controller Software with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Cisco Wireless Lan Controller Software
- Published:
- Last modified:
Description
A vulnerability in the management CLI of Cisco access point (AP) software could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to cause an affected device to reload spontaneously, resulting in a DoS condition.
Frequently asked questions
- What is CVE-2023-20056?
- A vulnerability in the management CLI of Cisco access point (AP) software could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to cause an affected device to reload spontaneously, resulting in a DoS condition.
- How severe is CVE-2023-20056?
- CVE-2023-20056 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-20056 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-20056?
- CVE-2023-20056 primarily affects Cisco Wireless Lan Controller Software. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-20056?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-20056 published?
- CVE-2023-20056 was published on 2023-03-23 and last updated on 2026-06-17.
References
Affected products (3)
- cpe:2.3:a:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
More vulnerabilities in Cisco Wireless Lan Controller Software
- CVE-2014-0703 — Critical (CVSS 10.0): Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition…
- CVE-2007-2036 — Critical (CVSS 10.0): The SNMP implementation in the Cisco Wireless LAN Controller (WLC) before 20070419 uses the default read-only community…
- CVE-2016-1363 — Critical (CVSS 9.8): Buffer overflow in the redirection functionality in Cisco Wireless LAN Controller (WLC) Software 7.2 through 7.4 before…
- CVE-2015-6314 — Critical (CVSS 9.8): Cisco Wireless LAN Controller (WLC) devices with software 7.6.x, 8.0 before 8.0.121.0, and 8.1 before 8.1.131.0 allow…
- CVE-2012-0371 — Critical (CVSS 9.3): Cisco Wireless LAN Controller (WLC) devices with software 4.x, 5.x, 6.0, and 7.0 before 7.0.220.4, when CPU-based ACLs…
- CVE-2013-1105 — Critical (CVSS 9.0): Cisco Wireless LAN Controller (WLC) devices with software 7.0 before 7.0.235.3, 7.1 and 7.2 before 7.2.111.3, and 7.3…
All CVEs affecting Cisco Wireless Lan Controller Software →
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