CVE-2024-5697Network attack vector

Screenshot activity disclosure via detectable injected frame

Published Jun 11, 2024 · Updated Mar 13, 2025

Information disclosure in Firefox Screenshots before 127 allows remote attackers to detect when a user captures a page. The legacy screenshot overlay injects a frame into page-visible content, allowing page script to observe the frame and its unique moz-extension identifier. A user must visit the site and invoke Firefox’s built-in Screenshot feature; the site learns the capture event and can correlate the browser identifier over time.

CVSS severity4.3
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Firefox Screenshots before 127 allows remote attackers to detect when a user captures a page. The legacy screenshot overlay injects a frame into page-visible content, allowing page script to observe the frame and its unique moz-extension identifier. A user must visit the site and invoke Firefox’s built-in Screenshot feature; the site learns the capture event and can correlate the browser identifier over time.

The record

CVE
CVE-2024-5697
Published
Jun 11, 2024
Updated
Mar 13, 2025
Vendor
Mozilla
Product
Firefox
Classifications
CWE-203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 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=unspecified <127

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=unspecified <127

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-203Observable Discrepancy

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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