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CVE-2023-25280

KEVD-Link DIR-820 Router OS Command Injection Vulnerability

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.

OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to escalate privileges to root via a crafted payload with the ping_addr parameter to ping.ccp.

CVSS 3.1 vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
PublishedMar 16, 2023
Last modifiedJun 17, 2026
Added to KEVSep 30, 2024
Remediation dueOct 21, 2024
    89
    Risk assessment · Critical

    Actively exploited. Patch immediately.

    Exploitation
    Confirmed in the wild (CISA KEV)
    Federal remediation deadline
    Overdue by 735 days
    CVSS
    9.8 CRITICAL
    EPSS (30-day exploit probability)
    97.9% · top 1% of all CVEs
    Weakness
    CWE-78
    Attack vector
    Network, remotely reachable
    Preconditions
    No privileges and no user interaction
    1. 1.The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.
    2. 2.Treat as emergency change: patch or isolate internet-facing instances first.
    3. 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
    4. 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

    Assessment is derived automatically from the live signals above; verify against your own asset inventory.