How severe is CVE-2025-29209?

CVE-2025-29209 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-2025-29209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-29209?

CVE-2025-29209 affects Totolink X18 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-29209?

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-2025-29209 have an EU (EUVD) identifier?

Yes. CVE-2025-29209 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11873.

When was CVE-2025-29209 published?

CVE-2025-29209 was published on 2025-04-18 and last updated on 2026-06-17.

CVE-2025-29209

CVE-2025-29209 is a critical-severity vulnerability in Totolink X18 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-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11873
Weakness: CWE-77
Affected product: Totolink X18 Firmware
Published: 2025-04-18
Last modified: 2026-06-17

Description

TOTOLINK X18 v9.1.0cu.2024_B20220329 has an unauthorized arbitrary command execution in the enable parameter' of the sub_41105C function of cstecgi .cgi.

Frequently asked questions

What is CVE-2025-29209?: TOTOLINK X18 v9.1.0cu.2024_B20220329 has an unauthorized arbitrary command execution in the enable parameter' of the sub_41105C function of cstecgi .cgi.
How severe is CVE-2025-29209?: CVE-2025-29209 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-2025-29209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-29209?: CVE-2025-29209 affects Totolink X18 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-29209?: 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-2025-29209 have an EU (EUVD) identifier?: Yes. CVE-2025-29209 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11873.
When was CVE-2025-29209 published?: CVE-2025-29209 was published on 2025-04-18 and last updated on 2026-06-17.

References

https://github.com/LZY0522/CVE/blob/main/X18-sub_41105c.md

Affected products (1)

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

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