Security readout for executives and security teams
Plain-English summary
CVE-2021-40727 is a high-severity Adobe InDesign flaw triggered when parsing a TIF file. A user would need to open or process a crafted file. The bundle indicates serious potential impact, but does not provide affected version ranges, exploit details, or a named fixed version.
Executive priority
Treat as a high-priority workstation risk for teams using InDesign with external files. Business urgency is highest where designers receive client, vendor, or public submissions. Patch validation should be coordinated with creative workflow owners.
Technical view
The issue is CWE-788, access of a memory location after the end of a buffer, in Adobe InDesign TIF parsing. CVSS 3.1 is 7.8 with local attack vector, low complexity, no privileges, and required user interaction. The source bundle lists affected versions as unspecified.
Likely exposure
Organizations using Adobe InDesign are potentially exposed, especially creative, marketing, publishing, and design teams handling external TIF files. Exact exposure cannot be confirmed from the bundle because affected and fixed versions are not specified.
Exploitation context
The source bundle does not show CISA KEV listing or cite active exploitation. Exploitation would require local interaction, such as a user opening or processing a problematic TIF file in InDesign.
Researcher notes
Key gaps are affected version specificity, fixed version detail, and exploit evidence. The CVSS vector supports user-assisted local exploitation with high impact ratings, but the provided evidence should not be stretched into claims of active exploitation or a particular exploit technique.
Mitigation direction
- Review Adobe APSB21-73 for affected and fixed InDesign versions.
- Apply Adobe-provided InDesign security updates when confirmed applicable.
- Restrict opening unsolicited or externally supplied TIF files until patched.
- Route external design files through established malware and content screening.
- Prioritize managed endpoints used by design and publishing teams.
Validation and detection
- Inventory endpoints with Adobe InDesign installed.
- Compare installed versions against Adobe APSB21-73 guidance.
- Confirm security updates are deployed through endpoint management.
- Review recent workflows involving external TIF files.
- Check whether users can open untrusted TIF attachments directly.
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-788: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-40727 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/indesign/apsb21-73.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.
Access of Memory Location After End of Buffer
Access of Memory Location After End of Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.