CVE-2023-23912

Exp

A vulnerability, found in EdgeRouters Version 2.0.9-hotfix.5 and earlier and UniFi Security Gateways (USG) Version 4.4.56 and earlier with their DHCPv6 prefix delegation set to dhcpv6-stateless or dhcpv6-stateful, allows a malicious actor directly connected to the WAN interface of an affected device to create a remote code execution vulnerability.

Published: 2023-02-09 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-23912 is rated High Exploit Risk (68.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.89%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-23912

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-23912

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.32% 0.89% -0.43%
2 2026-02-18 2.15% 1.32% -0.82%
3 2026-02-10 — 2.15% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-23912

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.8 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-23912

Affected software / configurations for CVE-2023-23912

Vendor Product Version Raw CPE
ui usg_firmware < 4.4.57 cpe:2.3:o:ui:usg_firmware:*:*:*:*:*:*:*:*
ui usg-pro-4_firmware < 4.4.57 cpe:2.3:o:ui:usg-pro-4_firmware:*:*:*:*:*:*:*:*
ui er-10x_firmware < 2.0.9 cpe:2.3:o:ui:er-10x_firmware:*:*:*:*:*:*:*:*
ui er-10x_firmware 2.0.9 cpe:2.3:o:ui:er-10x_firmware:2.0.9:-:*:*:*:*:*:*
ui er-10x_firmware 2.0.9 cpe:2.3:o:ui:er-10x_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-10x_firmware 2.0.9 cpe:2.3:o:ui:er-10x_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-10x_firmware 2.0.9 cpe:2.3:o:ui:er-10x_firmware:2.0.9:hotfix5:*:*:*:*:*:*
ui er-12_firmware < 2.0.9 cpe:2.3:o:ui:er-12_firmware:*:*:*:*:*:*:*:*
ui er-12_firmware 2.0.9 cpe:2.3:o:ui:er-12_firmware:2.0.9:-:*:*:*:*:*:*
ui er-12_firmware 2.0.9 cpe:2.3:o:ui:er-12_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-12_firmware 2.0.9 cpe:2.3:o:ui:er-12_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-12_firmware 2.0.9 cpe:2.3:o:ui:er-12_firmware:2.0.9:hotfix5:*:*:*:*:*:*
ui er-12p_firmware < 2.0.9 cpe:2.3:o:ui:er-12p_firmware:*:*:*:*:*:*:*:*
ui er-12p_firmware 2.0.9 cpe:2.3:o:ui:er-12p_firmware:2.0.9:-:*:*:*:*:*:*
ui er-12p_firmware 2.0.9 cpe:2.3:o:ui:er-12p_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-12p_firmware 2.0.9 cpe:2.3:o:ui:er-12p_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-12p_firmware 2.0.9 cpe:2.3:o:ui:er-12p_firmware:2.0.9:hotfix5:*:*:*:*:*:*
ui er-4_firmware < 2.0.9 cpe:2.3:o:ui:er-4_firmware:*:*:*:*:*:*:*:*
ui er-4_firmware 2.0.9 cpe:2.3:o:ui:er-4_firmware:2.0.9:-:*:*:*:*:*:*
ui er-4_firmware 2.0.9 cpe:2.3:o:ui:er-4_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-4_firmware 2.0.9 cpe:2.3:o:ui:er-4_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-4_firmware 2.0.9 cpe:2.3:o:ui:er-4_firmware:2.0.9:hotfix5:*:*:*:*:*:*
ui er-6p_firmware < 2.0.9 cpe:2.3:o:ui:er-6p_firmware:*:*:*:*:*:*:*:*
ui er-6p_firmware 2.0.9 cpe:2.3:o:ui:er-6p_firmware:2.0.9:-:*:*:*:*:*:*
ui er-6p_firmware 2.0.9 cpe:2.3:o:ui:er-6p_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-6p_firmware 2.0.9 cpe:2.3:o:ui:er-6p_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-6p_firmware 2.0.9 cpe:2.3:o:ui:er-6p_firmware:2.0.9:hotfix5:*:*:*:*:*:*
ui er-8-xg_firmware < 2.0.9 cpe:2.3:o:ui:er-8-xg_firmware:*:*:*:*:*:*:*:*
ui er-8-xg_firmware 2.0.9 cpe:2.3:o:ui:er-8-xg_firmware:2.0.9:-:*:*:*:*:*:*
ui er-8-xg_firmware 2.0.9 cpe:2.3:o:ui:er-8-xg_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-8-xg_firmware 2.0.9 cpe:2.3:o:ui:er-8-xg_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-8-xg_firmware 2.0.9 cpe:2.3:o:ui:er-8-xg_firmware:2.0.9:hotfix5:*:*:*:*:*:*
ui er-x_firmware < 2.0.9 cpe:2.3:o:ui:er-x_firmware:*:*:*:*:*:*:*:*
ui er-x_firmware 2.0.9 cpe:2.3:o:ui:er-x_firmware:2.0.9:-:*:*:*:*:*:*
ui er-x_firmware 2.0.9 cpe:2.3:o:ui:er-x_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-x_firmware 2.0.9 cpe:2.3:o:ui:er-x_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-x_firmware 2.0.9 cpe:2.3:o:ui:er-x_firmware:2.0.9:hotfix5:*:*:*:*:*:*
ui er-x-sfp_firmware < 2.0.9 cpe:2.3:o:ui:er-x-sfp_firmware:*:*:*:*:*:*:*:*
ui er-x-sfp_firmware 2.0.9 cpe:2.3:o:ui:er-x-sfp_firmware:2.0.9:-:*:*:*:*:*:*
ui er-x-sfp_firmware 2.0.9 cpe:2.3:o:ui:er-x-sfp_firmware:2.0.9:hotfix2:*:*:*:*:*:*
ui er-x-sfp_firmware 2.0.9 cpe:2.3:o:ui:er-x-sfp_firmware:2.0.9:hotfix4:*:*:*:*:*:*
ui er-x-sfp_firmware 2.0.9 cpe:2.3:o:ui:er-x-sfp_firmware:2.0.9:hotfix5:*:*:*:*:*:*

References for CVE-2023-23912

cvelogic Threat Intelligence