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CVE-2023-4584

Memory safety bugs fixed in Firefox 117, Firefox ESR 102.15, Firefox ESR 115.2, Thunderbird 102.15, and Thunderbird 115.2

HIGH
8.8
CVSS Score
Published: September 11, 2023 at 08:02 AM UTC
Updated: June 17, 2026 at 06:38 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity
HIGH8.8
Exploit prediction
EPSS 0.8%

Description

Memory safety bugs present in Firefox 116, Firefox ESR 102.14, Firefox ESR 115.1, Thunderbird 102.14, and Thunderbird 115.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.

Affected

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

Firefox· Mozilla
95%
v < 117v < 117.0115.0 ≤ v < 115.2
Affected range stops below 115.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 117, so it looks safe — our inference, not a vendor statement
Affected range stops below 117.0, so it looks safe — our inference, not a vendor statement
Firefox ESR· Mozilla
95%
v < 102.15v < 115.2
Affected range stops below 102.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 115.2, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 102.15v < 115.2
Affected range stops below 102.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 115.2, so it looks safe — our inference, not a vendor statement

References (6)

Broken Link
Source: [email protected]
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1843968%2C1845205%2C1846080%2C1846526%2C1847529
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2023-34/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2023-35/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2023-36/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2023-37/
Vendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2023-38/

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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