CVE-2022-29326Network attack vector

Memory corruption via addhostfilter stack overflow

Published May 10, 2022 · Updated Aug 3, 2024

A stack overflow in D-Link DIR-816 A2 firmware 1.10CNB04 allows remote attackers to corrupt memory via crafted addhostfilter data. The /goform/websHostFilter handler processes oversized addhostfilter input without a sufficient length bound, overflowing its stack buffer. Network access to the web management interface is sufficient; no authentication or user interaction is required, while the public record does not establish whether corruption yields code execution or only a crash.

CVSS severity9.8
Critical
EPSS probability3.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A stack overflow in D-Link DIR-816 A2 firmware 1.10CNB04 allows remote attackers to corrupt memory via crafted addhostfilter data. The /goform/websHostFilter handler processes oversized addhostfilter input without a sufficient length bound, overflowing its stack buffer. Network access to the web management interface is sufficient; no authentication or user interaction is required, while the public record does not establish whether corruption yields code execution or only a crash.

The record

CVE
CVE-2022-29326
Published
May 10, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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