CVE-2023-4048
HIGH
7.5
CVSS Score
Published: August 1, 2023 at 02:57 PM UTC
Updated: June 17, 2026 at 06:36 AM UTC
3 products affected across 2 vendorsDebian LinuxFirefoxFirefox ESR
Using Firefox by Mozilla?
Get instant alerts when new vulnerabilities affect Firefox - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit
Description
An out-of-bounds read could have led to an exploitable crash when parsing HTML with DOMParser in low memory situations. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 116v < 116.0102.0 ≤ v < 102.14115.0 ≤ v < 115.1
Affected range stops below 102.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 115.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 116, so it looks safe — our inference, not a vendor statement
Affected range stops below 116.0, so it looks safe — our inference, not a vendor statement
v < 102.14v < 115.1
Affected range stops below 102.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 115.1, 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:
References (8)
Issue TrackingPermissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1841368Third Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/08/msg00008.htmlThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/08/msg00010.htmlSSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card