How severe is CVE-2023-31742?

CVE-2023-31742 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-31742 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31742?

CVE-2023-31742 affects Linksys Wrt54gl Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31742?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-31742 published?

CVE-2023-31742 was published on 2023-05-22 and last updated on 2026-07-05.

CVE-2023-31742

CVE-2023-31742 is a high-severity vulnerability in Linksys Wrt54gl Firmware with a CVSS 3.x base score of 7.2. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-77.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Linksys Wrt54gl Firmware
Published: 2023-05-22
Last modified: 2026-07-05

Description

There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.

Frequently asked questions

What is CVE-2023-31742?: There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.
How severe is CVE-2023-31742?: CVE-2023-31742 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-31742 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31742?: CVE-2023-31742 affects Linksys Wrt54gl Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31742?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-31742 published?: CVE-2023-31742 was published on 2023-05-22 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:o:linksys:wrt54gl_firmware:4.30.18.006:*:*:*:*:*:*:*

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