Security readout for executives and security teams
Plain-English summary
CVE-2021-40697 affects Adobe FrameMaker when it parses a malicious file. A successful attack could expose sensitive memory from the application, but the victim must open the file. The CVSS score is low, and the provided sources do not show active exploitation.
Executive priority
Treat this as a routine patch-management item unless FrameMaker users frequently open untrusted files. It is not currently supported as an emergency by KEV or the provided sources.
Technical view
This is a CWE-125 out-of-bounds read in Adobe FrameMaker PDF file parsing. Affected versions are FrameMaker 2019 Update 8 and earlier, and 2020 Release Update 2 and earlier. Impact is limited confidentiality loss and possible ASLR mitigation bypass support.
Likely exposure
Exposure is mainly user workstations running the affected FrameMaker versions, especially teams that receive or open externally supplied document files. Server-side exposure is not indicated by the provided sources.
Exploitation context
The source bundle says exploitation requires user interaction: a victim must open a malicious file. CISA KEV status is false, and no cited source in the bundle confirms exploitation in the wild.
Researcher notes
The vulnerability is best viewed as an information disclosure and potential mitigation-bypass primitive, not direct code execution based on the supplied evidence. The bundle does not provide exploit status, proof-of-concept availability, or detailed patch version information.
Mitigation direction
- Identify all Adobe FrameMaker installations and versions.
- Prioritize affected 2019 and 2020 installations for vendor update review.
- Follow Adobe APSB21-74 guidance for fixes or mitigations.
- Limit opening untrusted FrameMaker or PDF-related files.
- Use endpoint controls to reduce risky file delivery paths.
Validation and detection
- Confirm installed FrameMaker versions against the affected version ranges.
- Verify Adobe APSB21-74 guidance has been reviewed and applied.
- Check whether FrameMaker users handle external files regularly.
- Review endpoint telemetry for suspicious document-opening patterns.
- Document any remaining affected installations and compensating controls.
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
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CWE-125: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-40697 mapping review
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Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
3.3LowVector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/framemaker/apsb21-74.htmlCVE 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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.