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CVE-2021-43702

29
FAUCET Score

CVE-2021-43702 is a critical Cross-Site Scripting (XSS) vulnerability affecting ASUS RT-A88U routers running firmware version 3.0.0.4.386_45898. An attacker could achieve stored XSS by manipulating the router's SSID with a malicious payload, which is then improperly sanitized in the Wi-Fi logs displayed in the admin panel. This vulnerability carries a CVSS score of 9.0 (Critical) due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.0.0.4.386.46061CPE matchmatch criteria
cpe:2.3:o:asus:zenwifi_xd4s_firmware:3.0.0.4.386.46061:*:*:*:*:*:*:*
3.0.0.4.386.46061CPE matchmatch criteria
cpe:2.3:o:asus:zenwifi_xt9_firmware:3.0.0.4.386.46061:*:*:*:*:*:*:*
3.0.0.4.386.46061CPE matchmatch criteria
cpe:2.3:o:asus:zenwifi_xd5_firmware:3.0.0.4.386.46061:*:*:*:*:*:*:*
3.0.0.4.386.46061CPE matchmatch criteria
cpe:2.3:o:asus:zenwifi_pro_et12_firmware:3.0.0.4.386.46061:*:*:*:*:*:*:*
3.0.0.4.386.46061CPE matchmatch criteria
cpe:2.3:o:asus:zenwifi__pro_xt12_firmware:3.0.0.4.386.46061:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.93%
Probability of exploitation in next 30 days
EPSS Percentile
56.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0093 is in the 64th percentile among its peer group of 265 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.6 Bluesky, 0.3 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

asus.com / uk/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AC88U
ProductVendor Advisory
kroll.com / en/insights/publications/cyber/cve-2021-43702-from-discovery-to-patch
ExploitThird Party Advisory