Exploited CVEs / D-Link / CVE-2023-25280

CVE-2023-25280

D-Link DIR-820 Router OS Command Injection Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2024-10-21 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: D-Link Support Announcements, linked below.

Risk summary

CriticalCISA KEV

9.8

CVSS base

98%

EPSS exploit probability

Critical

Severity

2024-09-30

Added to KEV

2024-10-21 (past due)

CISA due date

Actively exploited D-Link DIR-820 Router vulnerability, Critical severity, CVSS 9.8. Added to the CISA KEV catalog 2024-09-30.

Senserva AI read on CVE-2023-25280 CISA required action Official fix for CVE-2023-25280 Admin questions

Senserva AI Opinion for CVE-2023-25280

D-Link DIR-820 routers accept a crafted ping_addr parameter to ping.ccp that escalates an unauthenticated remote attacker straight to root. The 98 percent EPSS reflects continuous botnet scanning for this device class, and CISA confirmed exploitation in September 2024. Consumer-grade D-Link routers of this vintage are prime residential proxy and DDoS recruitment stock.

Do this: Replace DIR-820 routers wherever they carry business traffic, and check anything that sat internet-exposed for signs it is already participating in a botnet.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2023-25280

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

I run IT security. Facts for CVE-2023-25280, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2023-25280.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2023-25280: D-Link DIR-820 Router OS Command Injection Vulnerability
- Affected: D-Link DIR-820 Router
- Severity: Critical, CVSS 9.8; EPSS 30-day exploitation probability 98%
- Added to CISA KEV: 2024-09-30; federal remediation due 2024-10-21
- Ransomware-linked: no
- CISA required action: The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch now

Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.

The fix ships from the vendor: D-Link Support Announcements.

Do this now: Federal remediation deadline 2024-10-21; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Full tracking and change history for CVE-2023-25280

Published: 2024-09-30
Last revised: 2024-09-30
Changes tracked: 1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

Senserva Watchevery change we have recorded for this one

What changed, and when

2024-09-30 added to the CISA KEV catalog by CISA
2026-07-17 CVSS 0.0 to 9.8; EPSS first scored at 98.0%
2026-07-19 EPSS 98.0% to 97.9%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

CISA required action

Federal (BOD 22-01) remediation due date: 2024-10-21 (past due).

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

Official fix for CVE-2023-25280

The authoritative fix and affected-version list are published by the vendor. Find the DIR-820 Router advisory on D-Link Support Announcements.

D-Link Support Announcements CISA KEV entry

Common questions about CVE-2023-25280

Is CVE-2023-25280 actively exploited?

Yes. CVE-2023-25280 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2024-09-30, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 98%.

What is the CISA deadline and required action for CVE-2023-25280?

CISA set the federal (BOD 22-01) remediation due date at 2024-10-21, which has passed; treat any unremediated system as overdue. The verbatim required action: The impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.

What fixes CVE-2023-25280?

The authoritative fix is in the vendor advisory: see D-Link Support Announcements for the patched DIR-820 Router versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2023-25280?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2023-25280's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).

Scope and sources

More exploited D-Link CVEs: CVE-2025-29635 CVE-2022-37055 CVE-2020-25078 CVE-2020-25079 CVE-2022-40799 CVE-2024-0769 CVE-2021-40655 CVE-2014-100005
All D-Link exploited CVEs on one page: D-Link vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog FIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.