CVE-2022-25106Public exploitNetwork attack vector

Denial of service via genacgi_main overflow

Published Mar 4, 2022 · Updated Aug 3, 2024

Stack-based buffer overflow in D-Link DIR-859 v1.05 allows remote attackers to cause a denial of service via a crafted /gena.cgi payload. The genacgi_main function passes the service parameter directly to sprintf without bounds checking, overwriting stack memory when a long value is supplied. The vulnerable LAN-side web interface must be reachable; exploitation can interrupt router service, while the record does not establish confidentiality or integrity impact.

CVSS severity7.1
High
EPSS probability8.59%
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-859 v1.05 allows remote attackers to cause a denial of service via a crafted /gena.cgi payload. The genacgi_main function passes the service parameter directly to sprintf without bounds checking, overwriting stack memory when a long value is supplied. The vulnerable LAN-side web interface must be reachable; exploitation can interrupt router service, while the record does not establish confidentiality or integrity impact.

The record

CVE
CVE-2022-25106
Published
Mar 4, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 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

5.5NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
7.1NVDAV:N/AC:M/Au:N/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

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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