Cyber Resilience

CVE-2022-26376

CriticalPublic PoC

Published: 05 August 2022

Published
05 August 2022
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0070 72.4th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-26376 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Asus Asuswrt. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 27.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

this vulnerability.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

asus
asuswrt
≤ 3.0.0.4.386_48706
asuswrt-merlin
new gen
≤ 386.7
asus
xt8 firmware
≤ 3.0.0.4.386_48706
asus
tuf-ax3000 v2 firmware
≤ 3.0.0.4.386_48750
asus
xd4 firmware
≤ 3.0.0.4.386_48790
asus
et12 firmware
≤ 3.0.0.4.386_48823
asus
gt-ax6000 firmware
≤ 3.0.0.4.386_48823
asus
xt12 firmware
≤ 3.0.0.4.386_48823
asus
rt-ax58u firmware
≤ 3.0.0.4.386_48908
asus
xt9 firmware
≤ 3.0.0.4.388_20027
+9 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References