Security readout for executives and security teams
Plain-English summary
This flaw can crash an application that uses Adobe XMP Toolkit SDK when a user opens a maliciously crafted file. The cited CVSS data indicates availability impact only, with no confidentiality or integrity impact. Business urgency is moderate because exploitation requires user interaction and affects application availability, not system takeover.
Executive priority
Treat this as a moderate availability risk. It should be handled through normal vulnerability management, with higher urgency for teams processing untrusted external files at scale or supporting business-critical desktop and document workflows.
Technical view
CVE-2021-36058 is a CWE-190 integer overflow in Adobe XMP Toolkit SDK 2020.1 and earlier. A crafted file can trigger application-level denial of service in the current user context. CVSS 3.1 is 5.5 with local attack vector, low complexity, no privileges, and required user interaction.
Likely exposure
Exposure is most likely in applications or workflows that parse XMP metadata using Adobe XMP Toolkit SDK 2020.1 or earlier. Debian LTS advisories also reference security updates for exempi, so Linux package inventories should be checked where that library is present.
Exploitation context
The source bundle does not show active exploitation, and the CVE is not listed as KEV. Exploitation requires a victim to open a crafted file. The documented impact is application denial of service, not data theft, privilege escalation, or remote code execution.
Researcher notes
Evidence supports an integer overflow leading to application-level DoS only. The bundle does not provide fixed version details, proof of exploitation, or affected downstream product lists beyond Adobe XMP Toolkit and Debian exempi advisories. Avoid expanding scope without vendor confirmation.
Mitigation direction
- Apply Adobe vendor guidance from APSB21-65 for XMP Toolkit SDK usage.
- Apply relevant Debian LTS exempi security updates where that package is installed.
- Inventory products and internal tools that parse XMP metadata from untrusted files.
- Limit opening untrusted files in workflows that rely on vulnerable XMP parsing.
- Monitor vendor advisories for fixed versions and downstream package updates.
Validation and detection
- Identify applications embedding Adobe XMP Toolkit SDK 2020.1 or earlier.
- Check package inventories for Debian exempi installations covered by the cited advisories.
- Confirm vendor or distribution security updates are installed.
- Review file-ingestion workflows that automatically parse XMP metadata.
- Prioritize validation where users process external media, PDF, or metadata-rich files.
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-190: 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-2021-36058 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/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:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/xmpcore/apsb21-65.htmlCVE reference
- [debian-lts-announce] 20230925 [SECURITY] [DLA 3585-1] exempi security updateCVE reference · mailing-list
- https://lists.debian.org/debian-lts-announce/2025/08/msg00003.htmlCVE reference
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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.