CVE-2022-26376

Exp

A memory corruption vulnerability exists in the httpd unescape functionality of Asuswrt prior to 3.0.0.4.386_48706 and Asuswrt-Merlin New Gen prior to 386.7.. A specially-crafted HTTP request can lead to memory corruption. An attacker can send a network request to trigger this vulnerability.

Published: 2022-08-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-26376 is rated High Exploit Risk (79.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.68%). 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-2022-26376

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

Exploit prediction scoring system (EPSS) score for CVE-2022-26376

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 2026-01-18 0.50% 0.68% +0.18%
2 2025-11-29 0.65% 0.50% -0.15%
3 2025-11-21 — 0.65% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-26376

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/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]
5.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N 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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2022-26376

Affected software / configurations for CVE-2022-26376

Vendor Product Version Raw CPE
asus asuswrt < 3.0.0.4.386_48706 cpe:2.3:o:asus:asuswrt:*:*:*:*:*:*:*:*
asuswrt-merlin new_gen < 386.7 cpe:2.3:o:asuswrt-merlin:new_gen:*:*:*:*:*:*:*:*
asus xt8_firmware < 3.0.0.4.386_48706 cpe:2.3:o:asus:xt8_firmware:*:*:*:*:*:*:*:*
asus tuf-ax3000_v2_firmware < 3.0.0.4.386_48750 cpe:2.3:o:asus:tuf-ax3000_v2_firmware:*:*:*:*:*:*:*:*
asus xd4_firmware < 3.0.0.4.386_48790 cpe:2.3:o:asus:xd4_firmware:*:*:*:*:*:*:*:*
asus et12_firmware < 3.0.0.4.386_48823 cpe:2.3:o:asus:et12_firmware:*:*:*:*:*:*:*:*
asus gt-ax6000_firmware < 3.0.0.4.386_48823 cpe:2.3:o:asus:gt-ax6000_firmware:*:*:*:*:*:*:*:*
asus xt12_firmware < 3.0.0.4.386_48823 cpe:2.3:o:asus:xt12_firmware:*:*:*:*:*:*:*:*
asus rt-ax58u_firmware < 3.0.0.4.386_48908 cpe:2.3:o:asus:rt-ax58u_firmware:*:*:*:*:*:*:*:*
asus xt9_firmware < 3.0.0.4.388_20027 cpe:2.3:o:asus:xt9_firmware:*:*:*:*:*:*:*:*
asus xd6_firmware < 3.0.0.4.386_49356 cpe:2.3:o:asus:xd6_firmware:*:*:*:*:*:*:*:*
asus gt-ax11000_pro_firmware < 3.0.0.4.386_48996 cpe:2.3:o:asus:gt-ax11000_pro_firmware:*:*:*:*:*:*:*:*
asus gt-axe16000_firmware < 3.0.0.4.386_48786 cpe:2.3:o:asus:gt-axe16000_firmware:*:*:*:*:*:*:*:*
asus rt-ax86u_firmware < 3.0.0.4.386_49447 cpe:2.3:o:asus:rt-ax86u_firmware:*:*:*:*:*:*:*:*
asus rt-ax68u_firmware < 3.0.0.4.386_49479 cpe:2.3:o:asus:rt-ax68u_firmware:*:*:*:*:*:*:*:*
asus rt-ax82u_firmware < 3.0.0.4.386_49380 cpe:2.3:o:asus:rt-ax82u_firmware:*:*:*:*:*:*:*:*
asus rt-ax56u_firmware < 3.0.0.4.386_49559 cpe:2.3:o:asus:rt-ax56u_firmware:*:*:*:*:*:*:*:*
asus rt-ax55_firmware < 3.0.0.4.386_49559 cpe:2.3:o:asus:rt-ax55_firmware:*:*:*:*:*:*:*:*
asus gt-ax11000_firmware < 3.0.0.4.386_49559 cpe:2.3:o:asus:gt-ax11000_firmware:*:*:*:*:*:*:*:*

References for CVE-2022-26376

cvelogic Threat Intelligence