CVE-2023-32215Network attack vector

Code execution via undisclosed memory-safety defects

Published Jun 2, 2023 · Updated May 27, 2025

Memory corruption in Mozilla Firefox before 113, Firefox ESR before 102.11, and Thunderbird before 102.11 allows remote attackers to execute code. The rollup covers ten memory-safety defects whose erroneous operations and code loci remain undisclosed, although several showed memory corruption. Exploitation requires user interaction with attacker-controlled content; successful exploitation runs code with the application's privileges.

CVSS severity8.8
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Mozilla Firefox before 113, Firefox ESR before 102.11, and Thunderbird before 102.11 allows remote attackers to execute code. The rollup covers ten memory-safety defects whose erroneous operations and code loci remain undisclosed, although several showed memory corruption. Exploitation requires user interaction with attacker-controlled content; successful exploitation runs code with the application's privileges.

The record

CVE
CVE-2023-32215
Published
Jun 2, 2023
Updated
May 27, 2025
Vendor
Mozilla
Product
Firefox
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2023CVE publishedPublication date reported by the CVE source.
  2. May 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <113

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=unspecified <113
Mozilla · Thunderbirdversion=unspecified <102.11
Mozilla · Firefox ESRversion=unspecified <102.11

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/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-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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