CVE-2018-8826

ASUS RT-AC51U, RT-AC58U, RT-AC66U, RT-AC1750, RT-ACRH13, and RT-N12 D1 routers with firmware before 3.0.0.4.380.8228; RT-AC52U B1, RT-AC1200 and RT-N600 routers with firmware before 3.0.0.4.380.10446; RT-AC55U and RT-AC55UHP routers with firmware before 3.0.0.4.382.50276; RT-AC86U and RT-AC2900 routers with firmware before 3.0.0.4.384.20648; and possibly other RT-series routers allow remote attackers to execute arbitrary code via unspecified vectors.

Published: 2018-04-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-8826 is rated High Risk (69.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.27%). High exploitation likelihood—assess exposure and prioritize remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2018-8826

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 5.55% 4.27% -1.28%
2 2025-11-04 5.83% 5.55% -0.28%
3 2025-03-30 — 5.83% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-8826

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2018-8826

Affected software / configurations for CVE-2018-8826

Vendor Product Version Raw CPE
asus rt-ac51u_firmware 3.0.0.4.380.8228 cpe:2.3:o:asus:rt-ac51u_firmware:3.0.0.4.380.8228:*:*:*:*:*:*:*
asus rt-ac58u_firmware 3.0.0.4.380.8228 cpe:2.3:o:asus:rt-ac58u_firmware:3.0.0.4.380.8228:*:*:*:*:*:*:*
asus rt-ac66u_firmware 3.0.0.4.380.8228 cpe:2.3:o:asus:rt-ac66u_firmware:3.0.0.4.380.8228:*:*:*:*:*:*:*
asus rt-ac1750_firmware 3.0.0.4.380.8228 cpe:2.3:o:asus:rt-ac1750_firmware:3.0.0.4.380.8228:*:*:*:*:*:*:*
asus rt-n12_d1_firmware 3.0.0.4.380.8228 cpe:2.3:o:asus:rt-n12_d1_firmware:3.0.0.4.380.8228:*:*:*:*:*:*:*
asus rt-ac52u_b1_firmware 3.0.0.4.380.10446 cpe:2.3:o:asus:rt-ac52u_b1_firmware:3.0.0.4.380.10446:*:*:*:*:*:*:*
asus rt-ac1200_firmware 3.0.0.4.380.10446 cpe:2.3:o:asus:rt-ac1200_firmware:3.0.0.4.380.10446:*:*:*:*:*:*:*
asus rt-n600_firmware 3.0.0.4.380.10446 cpe:2.3:o:asus:rt-n600_firmware:3.0.0.4.380.10446:*:*:*:*:*:*:*
asus rt-ac55u_firmware 3.0.0.4.382.50276 cpe:2.3:o:asus:rt-ac55u_firmware:3.0.0.4.382.50276:*:*:*:*:*:*:*
asus rt-ac55uhp_firmware 3.0.0.4.382.50276 cpe:2.3:o:asus:rt-ac55uhp_firmware:3.0.0.4.382.50276:*:*:*:*:*:*:*
asus rt-ac86u_firmware 3.0.0.4.384.20648 cpe:2.3:o:asus:rt-ac86u_firmware:3.0.0.4.384.20648:*:*:*:*:*:*:*
asus rt-acrh13_firmware 3.0.0.4.380.8228 cpe:2.3:o:asus:rt-acrh13_firmware:3.0.0.4.380.8228:*:*:*:*:*:*:*
asus rt-ac2900_firmware 3.0.0.4.384.20648 cpe:2.3:o:asus:rt-ac2900_firmware:3.0.0.4.384.20648:*:*:*:*:*:*:*

References for CVE-2018-8826

URL Tags
https://www.asus.com/Networking/RT-AC2900/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/Networking/RT-AC52U-B1/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/ca-en/Networking/RT-N600/HelpDesk_Download/ Vendor Advisory
https://www.asus.com/sg/Networking/RT-AC58U/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/Networking/RT-AC1200/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/Networking/RT-AC1750/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/Networking/RT-AC86U/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/Networking/RT-ACRH13/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/Networking/RTAC66U/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/Networking/RTN12_D1/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/Networking/RTN66W/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/supportonly/RT-AC51U/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/supportonly/RT-AC55U/HelpDesk_BIOS/ Vendor Advisory
https://www.asus.com/us/supportonly/RT-AC55UHP/HelpDesk_BIOS/ Vendor Advisory
cvelogic Threat Intelligence