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High

OS Command Injection in ASUS RT-AX55 code-authentication module

IdentifiersCVE-2023-41348CWE-77

CVE-2023-41348 is an authenticated OS command injection vulnerability in the ASUS RT-AX55 router. According to the provided content, the flaw exists in an authentication-related function due to insufficient filtering of special characters within the code-authentication module. An authenticated remote attacker can supply crafted input containing shell metacharacters that is improperly sanitized before being passed to an operating system command context, resulting in command injection and arbitrary command execution on the device.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an authenticated remote attacker to execute arbitrary commands on the affected router. This can be used to disrupt device operation, terminate services, alter configuration, install persistence mechanisms such as backdoors, and take privileged control of the system. In the broader campaign context provided, similar flaws were used to convert compromised ASUS routers into persistent relay/proxy nodes and botnet infrastructure.

Mitigation

If you can’t patch tonight, do this now.

Until patching or replacement is completed, reduce exposure by disabling remote access features, especially AiCloud if enabled, and restricting management access to trusted networks only. Minimize or disable internet-facing administrative interfaces, monitor for unusual network activity and unauthorized configuration changes, and inspect for indicators of compromise such as unexpected SSH access or anomalous AiCloud TLS certificates. For unsupported devices, replacement is the preferred mitigation.

Remediation

Patch, then assume compromise.

Apply the vendor firmware update from ASUS that addresses CVE-2023-41348. If the device is end-of-life or no patched firmware is available, replace it with a supported model. Ensure the router is running the latest available firmware and review ASUS security advisories for model-specific fixed versions.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
ASUSRt-Ax55 Firmwareoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware1

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2023-41348
NVD
nvd.nist.gov/vuln/detail/CVE-2023-41348
MITRE CWE · CWE-77
cwe.mitre.org
Third Party Advisory
twcert.org.tw/tw/cp-132-7499-63907-1.html