CVE-2023-23912

highpriority · track · 35EPSS 0.010 · 61 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.96% (61st) EPSS

CVSS 8.8 · high

Is it mine?

21 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.17.5highAV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-75USCWE-75USCWE-94US

affected products (21)

Products and version ranges known to be affected.

n/a Ubiquiti EdgeRouter(s) and USG(s)≤ EdgeRouter(s) Version 2.0.9-hotfix.6 or later and USG(s) to Version 4.4.57 or laterenisa_euvdEU
Ubiquiti Networks EdgeRouter≤ 2.0.9-hotfix.5fstec_bduRU
Ubiquiti Networks UniFi Security Gateways≤ 4.4.56fstec_bduRU
ui er-10x firmware< 2.0.9nvdUScpe:2.3:o:ui:er-10x_firmware:*:*:*:*:*:*:*:*
ui er-10x firmware= 2.0.9nvdUScpe:2.3:o:ui:er-10x_firmware:*:*:*:*:*:*:*:*
ui er-12 firmware< 2.0.9nvdUScpe:2.3:o:ui:er-12_firmware:*:*:*:*:*:*:*:*
ui er-12 firmware= 2.0.9nvdUScpe:2.3:o:ui:er-12_firmware:*:*:*:*:*:*:*:*
ui er-12p firmware< 2.0.9nvdUScpe:2.3:o:ui:er-12p_firmware:*:*:*:*:*:*:*:*
ui er-12p firmware= 2.0.9nvdUScpe:2.3:o:ui:er-12p_firmware:*:*:*:*:*:*:*:*
ui er-4 firmware< 2.0.9nvdUScpe:2.3:o:ui:er-4_firmware:*:*:*:*:*:*:*:*
ui er-4 firmware= 2.0.9nvdUScpe:2.3:o:ui:er-4_firmware:*:*:*:*:*:*:*:*
ui er-6p firmware< 2.0.9nvdUScpe:2.3:o:ui:er-6p_firmware:*:*:*:*:*:*:*:*
ui er-6p firmware= 2.0.9nvdUScpe:2.3:o:ui:er-6p_firmware:*:*:*:*:*:*:*:*
ui er-8-xg firmware< 2.0.9nvdUScpe:2.3:o:ui:er-8-xg_firmware:*:*:*:*:*:*:*:*
ui er-8-xg firmware= 2.0.9nvdUScpe:2.3:o:ui:er-8-xg_firmware:*:*:*:*:*:*:*:*
ui er-x firmware< 2.0.9nvdUScpe:2.3:o:ui:er-x_firmware:*:*:*:*:*:*:*:*
ui er-x firmware= 2.0.9nvdUScpe:2.3:o:ui:er-x_firmware:*:*:*:*:*:*:*:*
ui er-x-sfp firmware< 2.0.9nvdUScpe:2.3:o:ui:er-x-sfp_firmware:*:*:*:*:*:*:*:*
ui er-x-sfp firmware= 2.0.9nvdUScpe:2.3:o:ui:er-x-sfp_firmware:*:*:*:*:*:*:*:*
ui usg firmware< 4.4.57nvdUScpe:2.3:o:ui:usg_firmware:*:*:*:*:*:*:*:*

showing 20 of 21

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2023-02-09modified 2026-06-17

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+10437 more

references (4)

External citations — patches, advisories, analysis.

scry

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