---
id: "CVE-2023-25280"
kind: "vulnerability"
aliases: ["CVE-2023-25280"]
title: "dlink dir-820l firmware: OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to escalate privileges to root via\u2026"
severity: "critical"
cvss: 9.8
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "D-Link DIR-820 Router", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "dlink dir-820l firmware", "fixed": [], "affected": "= 1.05b03", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["d-link", "dir-820", "exploited", "home-router", "infrastructure", "small-office-router"]
not_affected_if: ["no-dir-820-on-network"]
published_at: "2023-03-16T01:15:46+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:05+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-25280", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25280", "first_seen_at": "2026-10-23T22:29:05+00:00"}]
---

# dlink dir-820l firmware: OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to escalate privileges to root via…

D-Link DIR-820 routers have an OS command injection flaw in the ping_addr parameter of ping.ccp. A remote attacker without credentials can inject commands and escalate to root on the router.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:D-Link DIR-820 Router affected ? fixed ?
- vendor:dlink dir-820l firmware affected = 1.05b03 fixed ?

## How to check

Identify any D-Link DIR-820 router on the network (model label or admin page); unknown whether a firmware check command exists.

## Fix

Discontinue use of the DIR-820, since CISA says the product is end-of-life and end-of-service; no patched firmware is stated in the sources.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-25280
- 2026-10-23T22:29:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-25280

## From the sources

D-Link DIR-820 routers contain an OS command injection vulnerability that allows a remote, unauthenticated attacker to escalate privileges to root via a crafted payload with the ping_addr parameter to ping.ccp.

CISA required action: The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_