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CVE-2023-41345· NVD / CVE Program· CNA twcert

ASUS RT-AX55 - command injection - 1

ASUS RT-AX55’s authentication-related function has a vulnerability of insufficient filtering of special characters within its token-generated module. An authenticated remote attacker can exploit this vulnerability to perform a Command Injection attack to execute arbitrary commands, disrupt the system, or terminate services.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Nov 3, 2023
Updated
Jun 17, 2026
EPSS
1.3% · 69th percentile
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Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.8
CNA · twcert
8.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
asusrt-ax55 firmware
asusrt-ax55

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • asus rt-ax55 firmware3.0.0.4.386.51598

Versions reported by the vendor

Affected version ranges reported by the assigning authority (twcert). Independent of NVD's CPE analysis and usually ahead of it.

  • ASUS RT-AX55

    • 3.0.0.4.386.51598affected

Same product

asus: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-39780On ASUS RT-AX55 3.0.0.4.386.51598 devices, authenticated attackers can perform OS command injection via the /start_apply.htm qos_bw_rulelistKEV
    77This week
  • CVE-2023-41348ASUS RT-AX55 - command injection - 4
    35Monitor
  • CVE-2023-41347ASUS RT-AX55 - command injection - 3
    35Monitor
  • CVE-2023-41346ASUS RT-AX55 - command injection - 2
    35Monitor
  • CVE-2023-39240ASUS RT-AX55、RT-AX56U_V2 - Format String - 3
    28Monitor
  • CVE-2023-39239ASUS RT-AX55、RT-AX56U_V2、RT-AC86U - Format String - 2
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-3978053 days apartOn ASUS RT-AX55 3.0.0.4.386.51598 devices, authenticated attackers can perform OS command injection via the /start_apply.htm qos_bw_rulelistKEV
    77This week
  • CVE-2023-413460 days apartASUS RT-AX55 - command injection - 2
    35Monitor
  • CVE-2023-413470 days apartASUS RT-AX55 - command injection - 3
    35Monitor
  • CVE-2023-413480 days apartASUS RT-AX55 - command injection - 4
    35Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

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

nvd-primary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const host = req.body.host;exec("ping -c 1 " + host, onResult);

Fixed

ts
const host = req.body.host;if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records