Trending
CVE-2026-4687

CVE detail

CVE-2026-4687

Sandbox escape due to incorrect boundary conditions in the Telemetry component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

CVSS 8.6 · HighBuzz score 44.5

Buzz score

Why this CVE is surfacing

Buzz score total 44.5

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 30.0 · diversity 14.5 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

30.0

34 evidence mentions in the snapshot

Diversity score

14.5

5 sources across 2 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

34 source links · newest first

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4687.jsonsecurity.access.redhat.com
No excerpt available.
Vendor Advisorysecurity.access.redhat.comMar 24, 2026, 1:16 PM
https://bugzilla.redhat.com/show_bug.cgi?id=2450757bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/security/cve/CVE-2026-4687access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8850access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8427access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8315access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8290access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8289access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8288access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8287access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8286access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8285access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:8284access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7858access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7845access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7843access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7842access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7841access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7840access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7839access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7838access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:7837access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:6917access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:6342access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:6188access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:5932access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:5931access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://access.redhat.com/errata/RHSA-2026:5930access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comMar 24, 2026, 1:16 PM
https://www.mozilla.org/security/advisories/mfsa2026-24/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgMar 24, 2026, 1:16 PM
https://www.mozilla.org/security/advisories/mfsa2026-23/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgMar 24, 2026, 1:16 PM
https://www.mozilla.org/security/advisories/mfsa2026-22/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgMar 24, 2026, 1:16 PM
https://www.mozilla.org/security/advisories/mfsa2026-21/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgMar 24, 2026, 1:16 PM
https://www.mozilla.org/security/advisories/mfsa2026-20/www.mozilla.org
No excerpt available.
Vendor Advisorywww.mozilla.orgMar 24, 2026, 1:16 PM
https://bugzilla.mozilla.org/show_bug.cgi?id=2016368bugzilla.mozilla.org
No excerpt available.
Exploitbugzilla.mozilla.orgMar 24, 2026, 1:16 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence

CVE-2026-4690
Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, T…
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CVE-2026-4689
Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, T…
CVSS 10.0 · Critical
34 mentions
CVE-2026-16364
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
CVSS 9.1 · Critical
3 mentions
CVE-2026-12328
Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corrupt…
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CVE-2026-8093
Memory safety bugs present in Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploit…
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CVE-2026-8091
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24 mentions

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-4687.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:mozilla:firefoxSearch this product on Shodan

Exact CVE query

Eligible paid Shodan plan required

Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2026-4687Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Modified

Published

Mar 24, 2026

Modified

Jul 15, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Changed. Impacts can cross into a different security authority.
Confidentiality Impact (C): None. There is no direct impact to this security property.
Integrity Impact (I): None. There is no direct impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses