How severe is CVE-2025-55583?

CVE-2025-55583 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-2025-55583 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55583?

CVE-2025-55583 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55583?

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-2025-55583 have an EU (EUVD) identifier?

Yes. CVE-2025-55583 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26076.

When was CVE-2025-55583 published?

CVE-2025-55583 was published on 2025-08-28 and last updated on 2026-06-17.

CVE-2025-55583

CVE-2025-55583 is a critical-severity vulnerability in Dlink Dir-868l 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26076
Weakness: CWE-78
Affected product: Dlink Dir-868l Firmware
Published: 2025-08-28
Last modified: 2026-06-17

Description

D-Link DIR-868L B1 router firmware version FW2.05WWB02 contains an unauthenticated OS command injection vulnerability in the fileaccess.cgi component. The endpoint /dws/api/UploadFile accepts a pre_api_arg parameter that is passed directly to system-level shell execution functions without sanitization or authentication. Remote attackers can exploit this to execute arbitrary commands as root via crafted HTTP requests.

Frequently asked questions

What is CVE-2025-55583?: D-Link DIR-868L B1 router firmware version FW2.05WWB02 contains an unauthenticated OS command injection vulnerability in the fileaccess.cgi component. The endpoint /dws/api/UploadFile accepts a pre_api_arg parameter that is passed directly to system-level shell execution functions without sanitization or authentication. Remote attackers can exploit this to execute arbitrary commands as root via crafted HTTP requests.
How severe is CVE-2025-55583?: CVE-2025-55583 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-2025-55583 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55583?: CVE-2025-55583 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55583?: 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-2025-55583 have an EU (EUVD) identifier?: Yes. CVE-2025-55583 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26076.
When was CVE-2025-55583 published?: CVE-2025-55583 was published on 2025-08-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:dlink:dir-868l_firmware:2.05b02:*:*:*:*:*:*:*

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