Security readout for executives and security teams
Plain-English summary
A malicious PostScript file can trigger memory corruption in macOS. Apple says this may crash an app or disclose process memory. The issue requires user interaction, so it is most relevant to endpoints that open or preview untrusted documents. Apple fixed it in Catalina, Big Sur, and Monterey security updates.
Executive priority
Treat this as a high-priority endpoint patching item, not an emergency internet-facing service issue. The business risk is document-triggered compromise of confidentiality or availability on unpatched Macs, with user interaction required and no sourced evidence of active exploitation.
Technical view
CVE-2022-32843 is a macOS out-of-bounds write vulnerability, classified as CWE-787. The CVSS 3.1 vector is local, low complexity, no privileges required, user interaction required, with high confidentiality and availability impact. Apple addressed it with improved bounds checking.
Likely exposure
Exposure is likely on unpatched macOS systems before Security Update 2022-005 Catalina, macOS Big Sur 11.6.8, or macOS Monterey 12.5, especially where users receive or open untrusted PostScript files.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation requires a maliciously crafted PostScript file and user interaction. Public sources provided do not establish remote, unauthenticated, or wormable exploitation.
Researcher notes
The provided record names macOS and PostScript processing but does not identify a specific component, parser, or affected build range beyond Apple’s fixed releases. Validation should focus on patch state and document-handling exposure rather than exploit reproduction.
Mitigation direction
- Install Apple’s fixed Catalina, Big Sur, or Monterey security update.
- Prioritize macOS endpoints that handle external documents or email attachments.
- Reduce exposure to untrusted PostScript files until patched.
- Check Apple guidance for any additional version-specific remediation.
- Retire or isolate macOS systems that cannot receive Apple security updates.
Validation and detection
- Inventory macOS versions across managed and unmanaged endpoints.
- Confirm Catalina systems have Security Update 2022-005 installed.
- Confirm Big Sur systems are updated to 11.6.8 where applicable.
- Confirm Monterey systems are updated to 12.5 where applicable.
- Review endpoint telemetry for crashes tied to PostScript file handling.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-32843 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H1.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/HT213345CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT213344CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT213343CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.