CVE-2024-8900

HIGH

7.5

CVSS Score

Published: September 17, 2024 at 06:14 PM UTC

Updated: June 17, 2026 at 08:23 AM UTC

3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity

HIGH7.5

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

An attacker could write data to the user's clipboard, bypassing the user prompt, during a certain sequence of navigational events. This vulnerability affects Firefox < 129, Firefox ESR < 128.3, and Thunderbird < 128.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox · Mozilla

95%

v < 129

Affected range stops below 129, so it looks safe — our inference, not a vendor statement

Affected range stops below 129.0, so it looks safe — our inference, not a vendor statement

Firefox ESR · Mozilla

60%

v < 128.3

Affected range stops below 128.3, so it looks safe — our inference, not a vendor statement

Thunderbird · Mozilla

60%

v < 128.3

Affected range stops below 128.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.mozilla.org/security/advisories/mfsa2024-33/

References (4)

Permissions Required

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1872841

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2024-33/

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2024-47/

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2024-49/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfoCWE-732

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