CVE-2023-29550

HIGH

8.8

CVSS Score

Published: June 2, 2023 at 12:00 AM UTC

Updated: October 24, 2026 at 01:10 PM UTC

5 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity

HIGH8.8

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. 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 < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

Affected

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

Firefox · Mozilla

95%

v < 112.0

Affected range stops below 112, so it looks safe — our inference, not a vendor statement

Affected range stops below 112.0, so it looks safe — our inference, not a vendor statement

Firefox ESR · Mozilla

95%

v < 102.10

Affected range stops below 102.10, so it looks safe — our inference, not a vendor statement

Firefox Mobile · Mozilla

95%

v < 112.0

Affected range stops below 112.0, so it looks safe — our inference, not a vendor statement

Focus · Mozilla

95%

v < 112.0

Affected range stops below 112, so it looks safe — our inference, not a vendor statement

Affected range stops below 112.0, so it looks safe — our inference, not a vendor statement

Thunderbird · Mozilla

95%

v < 102.10

Affected range stops below 102.10, 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

References (4)

Issue TrackingNot Applicable

Source: [email protected]

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1720594%2C1812498%2C1814217%2C1818357%2C1751945%2C1818762%2C1819493%2C1820389%2C1820602%2C1821448%2C1822413%2C1824828

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2023-13/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2023-14/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2023-15/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

8.8HIGHCISA-ADP

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

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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