How severe is CVE-2025-1852?

CVE-2025-1852 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-1852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-1852?

CVE-2025-1852 affects Totolink Ex1800t Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-1852?

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-2025-1852 have an EU (EUVD) identifier?

Yes. CVE-2025-1852 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5820.

When was CVE-2025-1852 published?

CVE-2025-1852 was published on 2025-03-03 and last updated on 2026-06-17.

CVE-2025-1852

CVE-2025-1852 is a high-severity vulnerability in Totolink Ex1800t Firmware with a CVSS 3.x base score of 8.8. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 8.7
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-5820
Weakness: CWE-120
Affected product: Totolink Ex1800t Firmware
Published: 2025-03-03
Last modified: 2026-06-17

Description

A vulnerability has been found in Totolink EX1800T 9.1.0cu.2112_B20220316 and classified as critical. This vulnerability affects the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-1852?: A vulnerability has been found in Totolink EX1800T 9.1.0cu.2112_B20220316 and classified as critical. This vulnerability affects the function loginAuth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument password leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-1852?: CVE-2025-1852 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-1852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-1852?: CVE-2025-1852 affects Totolink Ex1800t Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-1852?: 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-2025-1852 have an EU (EUVD) identifier?: Yes. CVE-2025-1852 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-5820.
When was CVE-2025-1852 published?: CVE-2025-1852 was published on 2025-03-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:ex1800t_firmware:9.1.0cu.2112_b20220316:*:*:*:*:*:*:*

More vulnerabilities in Totolink Ex1800t Firmware

CVE-2024-34257 — Critical (CVSS 9.8): TOTOLINK EX1800T V9.1.0cu.2112_B20220316 has a vulnerability in the apcliEncrypType parameter that allows unauthorized…
CVE-2023-52026 — Critical (CVSS 9.8): TOTOlink EX1800T V9.1.0cu.2112_B20220316 was discovered to contain a remote command execution (RCE) vulnerability via…
CVE-2023-51022 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the…
CVE-2023-51021 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘merge’…
CVE-2023-51020 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the…
CVE-2023-51019 — Critical (CVSS 9.8): TOTOlink EX1800T v9.1.0cu.2112_B20220316 is vulnerable to unauthorized arbitrary command execution in the ‘key5g’…

All CVEs affecting Totolink Ex1800t Firmware →

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