An unchecked return value in TLS handshake code could have caused a potentially exploitable crash.
Noroxi assessment
Priority: Monitor (action score 30/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 69.9% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- According to CISA the attack is automatable: targets can be found by mass scanning.
- Fixed version: firefox (AlmaLinux:8) 115.9.1-1.el8_9.alma.1; thunderbird (AlmaLinux:8) 115.9.0-1.el8_9.alma.1; firefox (AlmaLinux:9) 115.9.1-1.el9_3.alma.1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to firefox (AlmaLinux:8) 115.9.1-1.el8_9.alma.1; thunderbird (AlmaLinux:8) 115.9.0-1.el8_9.alma.1; firefox (AlmaLinux:9) 115.9.1-1.el9_3.alma.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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.
- Published
- Jan 23, 2024
- Updated
- Jun 17, 2026
- EPSS
- 1.2% · 69th percentile
- CWE
- CWE-252
Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| mozilla | firefox | cpe:2.3:a:mozilla:firefox |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- mozilla firefoxbefore 122.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.
Mozilla Firefox
- unspecified and later · before 122affected
Mozilla Firefox ESR
- unspecified and later · before 115.9affected
Mozilla Thunderbird
- unspecified and later · before 115.9affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | firefox | before 115.9.1-1.el8_9.alma.1 | 115.9.1-1.el8_9.alma.1 |
| AlmaLinux:8 | thunderbird | before 115.9.0-1.el8_9.alma.1 | 115.9.0-1.el8_9.alma.1 |
| AlmaLinux:9 | firefox | before 115.9.1-1.el9_3.alma.1 | 115.9.1-1.el9_3.alma.1 |
| AlmaLinux:9 | firefox-x11 | before 115.9.1-1.el9_3.alma.1 | 115.9.1-1.el9_3.alma.1 |
| AlmaLinux:9 | thunderbird | before 115.9.0-1.el9_3.alma.1 | 115.9.0-1.el9_3.alma.1 |
| Debian:10 | firefox-esr | before 115.9.1esr-1~deb10u1 | 115.9.1esr-1~deb10u1 |
| Debian:10 | nss | before 2:3.42.1-1+deb10u8 | 2:3.42.1-1+deb10u8 |
| Debian:10 | thunderbird | before 1:115.9.0-1~deb10u1 | 1:115.9.0-1~deb10u1 |
| Debian:11 | firefox-esr | before 115.9.0esr-1~deb11u1 | 115.9.0esr-1~deb11u1 |
| Debian:11 | nss | before 2:3.61-1+deb11u4 | 2:3.61-1+deb11u4 |
| Debian:11 | thunderbird | before 1:115.9.0-1~deb11u1 | 1:115.9.0-1~deb11u1 |
| Debian:12 | firefox-esr | before 115.9.0esr-1~deb12u1 | 115.9.0esr-1~deb12u1 |
| Debian:12 | nss | before 2:3.87.1-1+deb12u1 | 2:3.87.1-1+deb12u1 |
| Debian:12 | thunderbird | before 1:115.9.0-1~deb12u1 | 1:115.9.0-1~deb12u1 |
| Debian:13 | firefox-esr | before 115.9.0esr-1 | 115.9.0esr-1 |
| Debian:13 | nss | before 2:3.96.1-1 | 2:3.96.1-1 |
| Debian:13 | thunderbird | before 1:115.9.0-1 | 1:115.9.0-1 |
| openSUSE:Leap 15.5 | MozillaFirefox | before 115.9.1-150200.152.131.1 | 115.9.1-150200.152.131.1 |
| openSUSE:Leap 15.5 | MozillaThunderbird | before 115.9.0-150200.8.154.1 | 115.9.0-150200.8.154.1 |
| openSUSE:Tumbleweed | MozillaFirefox | before 122.0-1.1 | 122.0-1.1 |
| openSUSE:Tumbleweed | MozillaThunderbird | before 115.9.0-1.1 | 115.9.0-1.1 |
| Red Hat:enterprise_linux:7::client | firefox | before 0:115.9.1-1.el7_9 | 0:115.9.1-1.el7_9 |
| Red Hat:enterprise_linux:7::client | firefox-debuginfo | before 0:115.9.1-1.el7_9 | 0:115.9.1-1.el7_9 |
| Red Hat:enterprise_linux:7::client | thunderbird | before 0:115.9.0-1.el7_9 | 0:115.9.0-1.el7_9 |
+56
Same product
mozilla: all recordsOther highest-scoring records for the same primary product.
- CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV94Now
- CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV87Now
- CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV86Now
Published before and after this one in the same product
- ← EarlierCVE-2024-0741Jan 23, 2024 · An out of bounds write in ANGLE could have allowed an attacker to corrupt memory leading to a potentially exploitable crash.27Monitor
- ← EarlierCVE-2024-0742Jan 23, 2024 · It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an incorrect timesta17Monitor
- Later →CVE-2024-0744Jan 23, 2024 · In some circumstances, JIT compiled code could have dereferenced a wild pointer value.30Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:firefox | 115.9.1-1.el8_9.alma.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:firefox-x11 | 115.9.1-1.el9_3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:thunderbird | 115.9.0-1.el9_3.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| debian:firefox-esr | 115.9.0esr-1~deb12u1 · Debian:12 | Package registry (OSV) |
| debian:nss | 2:3.87.1-1+deb12u1 · Debian:12 | Package registry (OSV) |
| debian:thunderbird | 1:115.9.0-1~deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:MozillaFirefox | 115.9.1-150200.152.131.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| opensuse:MozillaThunderbird | 115.9.0-150200.8.154.1 · openSUSE:Leap 15.5 | Package registry (OSV) |
| red hat:firefox | 0:115.9.1-1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:firefox-debuginfo | 0:115.9.1-1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:firefox-debugsource | 0:115.9.1-1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:firefox-x11 | 0:115.9.1-1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:thunderbird | 0:115.9.0-1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:thunderbird-debuginfo | 0:115.9.0-1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| red hat:thunderbird-debugsource | 0:115.9.0-1.el9_2 · Red Hat:rhel_eus:9.2::appstream | Package registry (OSV) |
| rocky linux:firefox | 0:115.9.1-1.el8_9 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:thunderbird | 0:115.9.0-1.el8_9 · Rocky Linux:8 | Package registry (OSV) |
| suse:MozillaFirefox | 115.9.0-112.203.2 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:MozillaFirefox | 115.9.1-150200.152.131.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP5 | Package registry (OSV) |
| suse:MozillaThunderbird | 115.9.0-150200.8.154.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP5 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2023-25733218 days apartThe return value from `gfx::SourceSurfaceSkia::Map()` wasn't being verified which could have potentially lead to a null pointer dereference.30Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-24-0052 · Jan 24, 2024(Mozilla Firefox Güvenlik Güncellemesi)
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-252 · Unchecked Return ValueCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- lists.debian.org/debian-lts-announce/2024/03/msg00010.html
- lists.debian.org/debian-lts-announce/2024/03/msg00022.html
- lists.debian.org/debian-lts-announce/2024/03/msg00028.html
- www.mozilla.org/security/advisories/mfsa2024-01/
- www.mozilla.org/security/advisories/mfsa2024-13/
- www.mozilla.org/security/advisories/mfsa2024-14/
- lists.debian.org/debian-lts-announce/2024/10/msg00028.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.