CVE-2026-5981Public exploitNetwork attack vector

Authenticated memory corruption via oversized curTime value

Published Apr 9, 2026 · Updated Apr 9, 2026

Buffer overflow in the formAdvFirewall handler in D-Link DIR-605L 2.13B01 allows remote authenticated users to corrupt memory via curTime. The public record identifies /goform/formAdvFirewall and its curTime argument, but does not disclose the unsafe copy operation or destination buffer. Low-privileged management access is required; the published assessment reports device-wide data and service impact, but demonstrated code execution is not established.

CVSS severity8.8
High
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the formAdvFirewall handler in D-Link DIR-605L 2.13B01 allows remote authenticated users to corrupt memory via curTime. The public record identifies /goform/formAdvFirewall and its curTime argument, but does not disclose the unsafe copy operation or destination buffer. Low-privileged management access is required; the published assessment reports device-wide data and service impact, but demonstrated code execution is not established.

The record

CVE
CVE-2026-5981
Published
Apr 9, 2026
Updated
Apr 9, 2026
Vendor
D-Link
Product
DIR-605L
Classifications
CWE-120, CWE-119, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.13B01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DIR-605Lversion=2.13B01

Published CVSS scores

9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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