Threat Intelligence / CVE / CVE-2025-29635

CVE-2025-29635 — Dlink Dir-823x Firmware 240126

CISA KEV

CVSS v3.1 7.2 (HIGH) · EPSS 1.2% (higher than 79.3% of all scored CVEs) · Priority 9/10 · Published 2025-03-25

As of 2026-04-24, CVE-2025-29635 is a HIGH-severity vulnerability in Dlink Dir-823x Firmware 240126, CVSS v3.1 7.2, EPSS 1.2% (79.3th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-24), with a US federal remediation deadline of 2026-05-08. Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2025-29635, most recently “RustDuck Botnet Rebuilt in Rust with Enhanced C2 Capabilities and Multi-Vector Exploitation”.

Last updated: 2026-04-24

What is CVE-2025-29635?

Command injection vulnerability in D-Link DIR-823X firmware versions 240126 and 240802 allows authorized attackers to execute arbitrary commands via POST requests to the /goform/set_prohibiting endpoint.

The record classifies CVE-2025-29635 under weakness class CWE-77. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 3 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 537 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 7.2 — HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS (FIRST): 1.2% probability of exploitation in the next 30 days, higher than 79.3% of all scored CVEs
CISA KEV: Listed since 2026-04-24, federal remediation deadline 2026-05-08
Threadlinqs priority: 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
Published: 2025-03-25, last modified 2026-04-24

Is CVE-2025-29635 being exploited?

CISA added CVE-2025-29635 to the Known Exploited Vulnerabilities catalog on 2026-04-24, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-05-08 under BOD 22-01. It currently carries a trending score of 35 in the Threadlinqs vulnerability feed.

Affected products and versions

Dlink: Dir-823x Firmware 240126, Dir-823x Firmware 240802, Dir-823x

How to fix CVE-2025-29635

Vendor advisory: https://www.akamai.com/blog/security-research/2026/apr/cve-2025-29635-mirai-campaign-targets-d-link-devices. Because CVE-2025-29635 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-05-08. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2025-29635

2 tracked threats in the Threadlinqs corpus reference CVE-2025-29635, either in the campaign’s CVE list or as an indicator on the campaign record.

RustDuck Botnet Rebuilt in Rust with Enhanced C2 Capabilities and Multi-Vector Exploitation — CRITICAL · 2026-06-30
CVE-2025-29635 — Mirai Variant Campaign Recruiting D-Link DIR-823X Routers via /goform/set_prohibiting Command Injection — HIGH · 2026-04-21

Sources

Seeded from nvd and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

Full detection coverage & IOCs for threats exploiting CVE-2025-29635 are available via the Threadlinqs MCP server (Purple tier). View plans →

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