Which products and versions are affected by CVE-2018-5999?

Affected: Asuswrt. The full list is in the CVE brief.

Is CVE-2018-5999 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since May 17, 2026.

Is CVE-2018-5999 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2018-5999?

Public exploit code is available.

Is there a fix for CVE-2018-5999?

Fixed versions are available, including Asuswrt 3.0.0.4.384_10007.

How urgently should CVE-2018-5999 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2018-5999

CriticalExploitedPublic exploit

In the handle_request function in router/httpd/httpd.c, processing of POST requests continues even if authentication fails.

Published Jan 22, 2018 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2018-5999 is a critical-severity vulnerability (CVSS 9.8 v3) affecting Asuswrt.
It is exploited in the wild, listed in Industry KEV feed since May 17, 2026. Public exploit code is available.
EPSS estimates a 87% probability of exploitation in the next 30 days.
Fixed versions are available, including Asuswrt 3.0.0.4.384_10007.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3

9.8

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

87%

Higher than 99.7% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2018-5999 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

An issue was discovered in AsusWRT before 3.0.0.4.384_10007. In the handle_request function in router/httpd/httpd.c, processing of POST requests continues even if authentication fails.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	May 17, 2026	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
AsuswrtAsus	See advisory	3.0.0.4.384_10007

Patched Releases

Asuswrt

3.0.0.4.384_10007

Timeline

Publicly disclosed
Jan 22, 2018
Last updated
Nov 21, 2024
Added to Industry KEV feed
May 17, 2026

References

5 more references in the full CVE brief

FAQ

Common Questions.

An issue was discovered in AsusWRT before 3.0.0.4.384_10007.
Affected: Asuswrt. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 17, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Asuswrt 3.0.0.4.384_10007.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2018-5999 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.