CVE-2023-21416Network attack vector

Authenticated denial of service via path traversal

Published Nov 21, 2023 · Updated Jun 11, 2025

Path traversal in AXIS OS 10.7 through 11.6 allows remote authenticated users to block the web overlay configuration page. The dynamicoverlay.cgi VAPIX endpoint improperly resolves traversal sequences in a path, making the overlay configuration interface unavailable. An operator- or administrator-privileged service account is required; the published impact is limited to that interface, not the entire device.

CVSS severity7.1
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in AXIS OS 10.7 through 11.6 allows remote authenticated users to block the web overlay configuration page. The dynamicoverlay.cgi VAPIX endpoint improperly resolves traversal sequences in a path, making the overlay configuration interface unavailable. An operator- or administrator-privileged service account is required; the published impact is limited to that interface, not the entire device.

The record

CVE
CVE-2023-21416
Published
Nov 21, 2023
Updated
Jun 11, 2025
Vendor
Axis Communications AB
Product
AXIS OS
Classifications
CWE-35, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2025Record 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=AXIS OS 10.7 – 11.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Axis Communications AB · AXIS OSversion=AXIS OS 10.7 – 11.6

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1Axis Communications ABCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-35Path Traversal: '.../...//'
T1499.004Application or System Exploitation

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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