Security readout for executives and security teams
Plain-English summary
CVE-2021-45054 is a low-severity Adobe InCopy flaw triggered by opening a malicious JPEG2000 file. It can expose sensitive process memory and may help bypass protections such as ASLR, but it requires local user interaction and does not provide code execution by itself.
Executive priority
Treat this as a routine workstation patching item, not an emergency. Prioritize teams handling outside files because user interaction is required and business impact is limited to information disclosure.
Technical view
Adobe InCopy 16.4 and earlier contain a JPEG2000 parsing use-after-free issue, mapped to CWE-416. The published CVSS 3.1 score is 3.3 with local attack vector, no privileges required, required user interaction, and low confidentiality impact only.
Likely exposure
Exposure is most likely on workstations where Adobe InCopy 16.4 or earlier is installed and users open externally supplied creative files. Server-side exposure is not indicated by the provided sources.
Exploitation context
The sources do not indicate known active exploitation, and the CVE is not listed as KEV in the provided bundle. Exploitation requires convincing a user to open a malicious file, limiting scale but keeping targeted phishing scenarios relevant.
Researcher notes
Evidence is limited to the CVE record details and Adobe advisory reference in the supplied bundle. No exploit status, proof of concept, or fixed version detail is included in the provided text, so remediation should follow Adobe APSB22-04 directly.
Mitigation direction
- Inventory endpoints for Adobe InCopy 16.4 or earlier.
- Check Adobe APSB22-04 for the vendor-supported fixed release or update path.
- Prioritize patching users who handle external publishing or design files.
- Restrict opening untrusted JPEG2000 files until affected systems are updated.
- Reinforce attachment handling guidance for creative and publishing teams.
Validation and detection
- Confirm installed Adobe InCopy versions across managed endpoints.
- Verify whether affected versions are still present after remediation.
- Review email and file-transfer controls for externally supplied JPEG2000 files.
- Check endpoint telemetry for suspicious InCopy file-open events, if available.
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-416: 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-2021-45054 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
- Low
- CVSS
- 3.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/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:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.3LowVector: CVSS:3.1/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/incopy/apsb22-04.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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.