CVE-2022-26376
CVE-2022-26376 is a critical-severity vulnerability in Asus Asuswrt with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Asus Asuswrt
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2022-26376?
- 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.
- How severe is CVE-2022-26376?
- CVE-2022-26376 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-26376 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-26376?
- CVE-2022-26376 primarily affects Asus Asuswrt. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-26376?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2022-26376 published?
- CVE-2022-26376 was published on 2022-08-05 and last updated on 2026-06-17.
References
Affected products (19)
- cpe:2.3:o:asus:asuswrt:*:*:*:*:*:*:*:*
- cpe:2.3:o:asuswrt-merlin:new_gen:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:xt8_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:tuf-ax3000_v2_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:xd4_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:et12_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:gt-ax6000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:xt12_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:rt-ax58u_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:xt9_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:xd6_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:gt-ax11000_pro_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:gt-axe16000_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:rt-ax86u_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:rt-ax68u_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:rt-ax82u_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:rt-ax56u_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:rt-ax55_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:asus:gt-ax11000_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Asus Asuswrt
- CVE-2018-20334 — Critical (CVSS 9.8): An issue was discovered in ASUSWRT 3.0.0.4.384.20308. When processing the /start_apply.htm POST data, there is a…
- CVE-2018-6000 — Critical (CVSS 9.8): An issue was discovered in AsusWRT before 3.0.0.4.384_10007. The do_vpnupload_post function in router/httpd/web.c in…
- CVE-2018-5999 — Critical (CVSS 9.8): An issue was discovered in AsusWRT before 3.0.0.4.384_10007. In the handle_request function in router/httpd/httpd.c,…
- CVE-2017-15655 — Critical (CVSS 9.6): Multiple buffer overflow vulnerabilities exist in the HTTPd server in Asus asuswrt version <=3.0.0.4.376.X. All have…
- CVE-2017-15656 — High (CVSS 8.8): Password are stored in plaintext in nvram in the HTTPd server in all current versions (<= 3.0.0.4.380.7743) of Asus…
- CVE-2017-15653 — High (CVSS 8.8): Improper administrator IP validation after his login in the HTTPd server in all current versions (<= 3.0.0.4.380.7743)…
All CVEs affecting Asus Asuswrt →
Other CWE-787 (Out-of-bounds Write) vulnerabilities
- CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
- CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src modules). This vulnerability is…
- CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
- CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
- CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
- CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…