How severe is CVE-2024-31807?

CVE-2024-31807 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-31807 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-31807?

CVE-2024-31807 affects Totolink Ex200 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-31807?

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

Does CVE-2024-31807 have an EU (EUVD) identifier?

Yes. CVE-2024-31807 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-29680.

When was CVE-2024-31807 published?

CVE-2024-31807 was published on 2024-04-08 and last updated on 2026-06-17.

CVE-2024-31807

CVE-2024-31807 is a critical-severity vulnerability in Totolink Ex200 Firmware with a CVSS 3.x base score of 9.8. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-29680
Weakness: CWE-94
Affected product: Totolink Ex200 Firmware
Published: 2024-04-08
Last modified: 2026-06-17

Description

TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution (RCE) vulnerability via the hostTime parameter in the NTPSyncWithHost function.

Frequently asked questions

What is CVE-2024-31807?: TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution (RCE) vulnerability via the hostTime parameter in the NTPSyncWithHost function.
How severe is CVE-2024-31807?: CVE-2024-31807 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-31807 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-31807?: CVE-2024-31807 affects Totolink Ex200 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-31807?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-31807 have an EU (EUVD) identifier?: Yes. CVE-2024-31807 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-29680.
When was CVE-2024-31807 published?: CVE-2024-31807 was published on 2024-04-08 and last updated on 2026-06-17.

References

https://github.com/4hsien/CVE-vulns/blob/main/TOTOLINK/EX200/CI_2_NTPSyncWithHost/CI.md

Affected products (1)

cpe:2.3:o:totolink:ex200_firmware:4.0.3c.7646_b20201211:*:*:*:*:*:*:*

More vulnerabilities in Totolink Ex200 Firmware

CVE-2024-31810 — Critical (CVSS 9.8): TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a hardcoded password for root at /etc/shadow.sample.
CVE-2021-43711 — Critical (CVSS 9.8): The downloadFlile.cgi binary file in TOTOLINK EX200 V4.0.3c.7646_B20201211 has a command injection vulnerability when…
CVE-2024-31815 — Critical (CVSS 9.1): In TOTOLINK EX200 V4.0.3c.7314_B20191204, an attacker can obtain the configuration file without authorization through…
CVE-2024-7336 — High (CVSS 8.8): A vulnerability classified as critical was found in TOTOLINK EX200 4.0.3c.7646_B20201211. Affected by this…
CVE-2024-7335 — High (CVSS 8.8): A vulnerability classified as critical has been found in TOTOLINK EX200 4.0.3c.7646_B20201211. Affected is the function…
CVE-2024-31814 — High (CVSS 8.8): TOTOLINK EX200 V4.0.3c.7646_B20201211 allows attackers to bypass login through the Form_Login function.

All CVEs affecting Totolink Ex200 Firmware →

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