CVE-2026-90692Network attack vector

Remote stack overflow via Dynamic DNS fields

Published Sep 14, 2026 · Updated Sep 14, 2026

Stack-based buffer overflow in D-Link DIR-878 120B05 allows remote attackers to cause unspecified impact via crafted Dynamic DNS IPv6 settings. SetDynamicDNSIPv6Settings places attacker-controlled IPv6Address or Hostname data into a stack buffer without adequate bounds enforcement. Network reachability to the settings handler is required; the source record does not state whether authentication is required.

CVSS severityUnavailable
Unscored
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in D-Link DIR-878 120B05 allows remote attackers to cause unspecified impact via crafted Dynamic DNS IPv6 settings. SetDynamicDNSIPv6Settings places attacker-controlled IPv6Address or Hostname data into a stack buffer without adequate bounds enforcement. Network reachability to the settings handler is required; the source record does not state whether authentication is required.

The record

CVE
CVE-2026-90692
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
D-Link
Product
DIR-878
Classifications
T1210
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 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?

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  1. Affected versionversion=120B05

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

D-Link · DIR-878version=120B05

Published CVSS scores

No CVSS assessment is available in this record.

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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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