How severe is CVE-2025-1340?

CVE-2025-1340 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-2025-1340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-1340?

CVE-2025-1340 affects Totolink X18 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-1340?

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-2025-1340 have an EU (EUVD) identifier?

Yes. CVE-2025-1340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2111.

When was CVE-2025-1340 published?

CVE-2025-1340 was published on 2025-02-16 and last updated on 2026-06-17.

CVE-2025-1340

CVE-2025-1340 is a high-severity vulnerability in Totolink X18 Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 8.7
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2111
Weakness: CWE-119
Affected product: Totolink X18 Firmware
Published: 2025-02-16
Last modified: 2026-06-17

Description

A vulnerability classified as critical has been found in TOTOLINK X18 9.1.0cu.2024_B20220329. Affected is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi. The manipulation as part of String leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-1340?: A vulnerability classified as critical has been found in TOTOLINK X18 9.1.0cu.2024_B20220329. Affected is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi. The manipulation as part of String leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-1340?: CVE-2025-1340 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-2025-1340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-1340?: CVE-2025-1340 affects Totolink X18 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-1340?: 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-2025-1340 have an EU (EUVD) identifier?: Yes. CVE-2025-1340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2111.
When was CVE-2025-1340 published?: CVE-2025-1340 was published on 2025-02-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:x18_firmware:9.1.0cu.2024_b20220329:*:*:*:*:*:*:*

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