CVE-2024-0743
HIGH
7.5
CVSS Score
Published: January 23, 2024 at 01:48 PM UTC
Updated: June 17, 2026 at 06:54 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit
Description
An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.9, and Thunderbird < 115.9.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 122
Affected range stops below 122, so it looks safe — our inference, not a vendor statement
Affected range stops below 122.0, so it looks safe — our inference, not a vendor statement
v < 115.9
Affected range stops below 115.9, so it looks safe — our inference, not a vendor statement
v < 115.9
Affected range stops below 115.9, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (8)
Release NotesVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2024-01/Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2024/10/msg00028.htmlSSVC — 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
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-252
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