How severe is CVE-2024-42736?

CVE-2024-42736 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-42736 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42736?

CVE-2024-42736 affects Totolink X5000r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42736?

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.

Does CVE-2024-42736 have an EU (EUVD) identifier?

Yes. CVE-2024-42736 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39749.

When was CVE-2024-42736 published?

CVE-2024-42736 was published on 2024-08-13 and last updated on 2026-06-17.

CVE-2024-42736

CVE-2024-42736 is a high-severity vulnerability in Totolink X5000r Firmware with a CVSS 3.x base score of 7.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39749
Weakness: CWE-78
Affected product: Totolink X5000r Firmware
Published: 2024-08-13
Last modified: 2026-06-17

Description

In TOTOLINK X5000r v9.1.0cu.2350_b20230313, the file /cgi-bin/cstecgi.cgi contains an OS command injection vulnerability in addBlacklist. Authenticated Attackers can send malicious packet to execute arbitrary commands.

Frequently asked questions

What is CVE-2024-42736?: In TOTOLINK X5000r v9.1.0cu.2350_b20230313, the file /cgi-bin/cstecgi.cgi contains an OS command injection vulnerability in addBlacklist. Authenticated Attackers can send malicious packet to execute arbitrary commands.
How severe is CVE-2024-42736?: CVE-2024-42736 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-42736 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42736?: CVE-2024-42736 affects Totolink X5000r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42736?: 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.
Does CVE-2024-42736 have an EU (EUVD) identifier?: Yes. CVE-2024-42736 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39749.
When was CVE-2024-42736 published?: CVE-2024-42736 was published on 2024-08-13 and last updated on 2026-06-17.

References

https://github.com/HouseFuzz/reports/blob/main/totolink/x5000r/addBlacklist/addBlacklist.md

Affected products (1)

cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2350_b20230313:*:*:*:*:*:*:*

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