CVE-2026-14241Network attack vector

Memory corruption via undisclosed memory safety defects

Published Jun 30, 2026 · Updated Jun 30, 2026

Memory safety defects in Mozilla Firefox 152.0.3 allow attackers to corrupt process memory via unspecified vectors. Mozilla groups eight defects under the record but does not disclose the affected components or the invalid memory operations. Arbitrary code execution is Mozilla's projected consequence; the triggering input, user-interaction gate, and sandbox boundary remain undisclosed.

CVSS severity9.8
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory safety defects in Mozilla Firefox 152.0.3 allow attackers to corrupt process memory via unspecified vectors. Mozilla groups eight defects under the record but does not disclose the affected components or the invalid memory operations. Arbitrary code execution is Mozilla's projected consequence; the triggering input, user-interaction gate, and sandbox boundary remain undisclosed.

The record

CVE
CVE-2026-14241
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-119, CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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