CVE-2023-20112 [High] | Out-of-bounds Read in Business 150ax Firmware

A vulnerability in Cisco access point (AP) software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of certain parameters within 802.11 frames. An attacker could exploit this vulnerability by sending a wireless 802.11 association request frame with crafted parameters to an affected device. A successful exploit could allow the attacker to cause an unexpected reload of an affected device, resulting in a DoS condition.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.11%	0.30%	+0.20%
2	2026-05-16	0.31%	0.11%	-0.20%
3	2026-03-31	—	0.31%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.11%

0.30%

+0.20%

2026-05-16

0.31%

0.11%

-0.20%

2026-03-31

—

0.31%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.4	3.1	HIGH	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	4.0	[email protected]
6.5	3.1	MEDIUM	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.4

3.1

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Click to expand

Attack vector (AV:A): Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

4.0

[email protected]

6.5

3.1

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand

Attack vector (AV:A): Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

3.6

[email protected]

Affected software / configurations for CVE-2023-20112

Vendor	Product	Version	Raw CPE
cisco	business_150ax_firmware	< 10.3.2.0	cpe:2.3:o:cisco:business_150ax_firmware::::::::
cisco	business_151axm_firmware	< 10.3.2.0	cpe:2.3:o:cisco:business_151axm_firmware::::::::
cisco	catalyst_9105ax_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9105ax_firmware::::::::
cisco	catalyst_9105axi_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9105axi_firmware::::::::
cisco	catalyst_9105axw_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9105axw_firmware::::::::
cisco	catalyst_9105i_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9105i_firmware::::::::
cisco	catalyst_9105w_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9105w_firmware::::::::
cisco	catalyst_9115_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9115_firmware::::::::
cisco	catalyst_9115ax_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9115ax_firmware::::::::
cisco	catalyst_9115axe_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9115axe_firmware::::::::
cisco	catalyst_9115axi_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9115axi_firmware::::::::
cisco	catalyst_9117_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9117_firmware::::::::
cisco	catalyst_9117ax_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9117ax_firmware::::::::
cisco	catalyst_9117axi_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9117axi_firmware::::::::
cisco	catalyst_9120_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9120_firmware::::::::
cisco	catalyst_9120ax_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9120ax_firmware::::::::
cisco	catalyst_9120axe_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9120axe_firmware::::::::
cisco	catalyst_9120axi_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9120axi_firmware::::::::
cisco	catalyst_9120axp_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9120axp_firmware::::::::
cisco	catalyst_9124_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9124_firmware::::::::
cisco	catalyst_9124ax_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9124ax_firmware::::::::
cisco	catalyst_9124axd_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9124axd_firmware::::::::
cisco	catalyst_9124axi_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9124axi_firmware::::::::
cisco	catalyst_9130_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9130_firmware::::::::
cisco	catalyst_9130ax_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9130ax_firmware::::::::
cisco	catalyst_9130axe_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9130axe_firmware::::::::
cisco	catalyst_9130axi_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9130axi_firmware::::::::
cisco	catalyst_9136_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9136_firmware::::::::
cisco	catalyst_9162_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9162_firmware::::::::
cisco	catalyst_9164_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9164_firmware::::::::
cisco	catalyst_9166_firmware	< 10.3.2.0	cpe:2.3:o:cisco:catalyst_9166_firmware::::::::

References for CVE-2023-20112

URL	Tags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-assoc-dos-D2SunWK2	Vendor Advisory

URL

CVE-2023-20112 | Cisco Access Point Software Association Request Denial of Service Vulnerability

Exploit prediction scoring system (EPSS) score for CVE-2023-20112

Common vulnerability scoring system (CVSS) metrics for CVE-2023-20112

Weakness enumeration for CVE-2023-20112

Affected software / configurations for CVE-2023-20112

References for CVE-2023-20112