How severe is CVE-2025-70327?

CVE-2025-70327 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-2025-70327 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-70327?

CVE-2025-70327 affects Totolink X5000r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-70327?

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-2025-70327 have an EU (EUVD) identifier?

Yes. CVE-2025-70327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207621.

When was CVE-2025-70327 published?

CVE-2025-70327 was published on 2026-02-23 and last updated on 2026-06-17.

CVE-2025-70327

CVE-2025-70327 is a critical-severity vulnerability in Totolink X5000r 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-88.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207621
Weakness: CWE-88
Affected product: Totolink X5000r Firmware
Published: 2026-02-23
Last modified: 2026-06-17

Description

TOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of the /usr/sbin/lighttpd executable. The ip parameter is retrieved via websGetVar and passed to a ping command through CsteSystem without validating if the input starts with a hyphen (-). This allows remote authenticated attackers to inject arbitrary command-line options into the ping utility, potentially leading to a Denial of Service (DoS) by causing excessive resource consumption or prolonged execution.

Frequently asked questions

What is CVE-2025-70327?: TOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of the /usr/sbin/lighttpd executable. The ip parameter is retrieved via websGetVar and passed to a ping command through CsteSystem without validating if the input starts with a hyphen (-). This allows remote authenticated attackers to inject arbitrary command-line options into the ping utility, potentially leading to a Denial of Service (DoS) by causing excessive resource consumption or prolonged execution.
How severe is CVE-2025-70327?: CVE-2025-70327 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-2025-70327 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-70327?: CVE-2025-70327 affects Totolink X5000r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-70327?: 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-2025-70327 have an EU (EUVD) identifier?: Yes. CVE-2025-70327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207621.
When was CVE-2025-70327 published?: CVE-2025-70327 was published on 2026-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:*:*:*:*:*:*:*

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