# CVE-2025-55583

> As of 2025-08-28, CVE-2025-55583 is a CRITICAL-severity vulnerability, CVSS v3.1 9.8, EPSS 6.9% (93.9th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2025-55583, most recently “Evooo1Bot: Multi-Functional Mirai-Based Linux Botnet Exploiting 18 Known CVEs in Internet-Facing Devices”.

**Last updated:** 2025-08-28

## 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.

The record classifies CVE-2025-55583 under weakness classes [CWE-78](https://intel.threadlinqs.com/cwe/CWE-78), [CWE-306](https://intel.threadlinqs.com/cwe/CWE-306), [CWE-668](https://intel.threadlinqs.com/cwe/CWE-668). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. The identifier was first published 408 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.8 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 6.9% probability of exploitation in the next 30 days, higher than 93.9% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 10/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2025-08-28

## Is CVE-2025-55583 being exploited?

Weaponised exploit code for CVE-2025-55583 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

- [trickest/cve](https://github.com/trickest/cve/blob/main/2025/CVE-2025-55583.md) (trickest)

## Affected products and versions

No affected-product or package list has been recorded for CVE-2025-55583 in the tracked sources. The vendor advisory and the references below are the authoritative statement of what is affected.

## How to fix CVE-2025-55583

No vendor patch reference has been recorded for CVE-2025-55583 in the tracked sources. Follow the references below for a fix, and treat any affected deployment as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2025-55583

1 tracked threat in the Threadlinqs corpus references CVE-2025-55583, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Evooo1Bot: Multi-Functional Mirai-Based Linux Botnet Exploiting 18 Known CVEs in Internet-Facing Devices](https://intel.threadlinqs.com/threat/TL-2026-3062) — HIGH · 2026-10-09

## Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-10.

**Other references**

- [dlink.com](https://www.dlink.com/en/security-bulletin/)
- [supportannouncement.us.dlink.com](https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10397)
- [cybermaya.in](https://cybermaya.in/posts/Post-44/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2025-55583
Full detection coverage and IOCs for threats exploiting CVE-2025-55583 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp