Security readout for executives and security teams
Plain-English summary
CVE-2021-36008 is a low-severity Adobe Illustrator flaw triggered when a user opens a maliciously crafted file. Successful exploitation could let an attacker read limited file system information as the current user. It requires user interaction and is not listed as known exploited in CISA KEV.
Executive priority
Treat as routine patch management unless Illustrator is widely deployed in high-risk file intake workflows. The business risk is limited by low CVSS impact and required user interaction.
Technical view
Adobe Illustrator 25.2.3 and earlier are described as affected by a CWE-416 use-after-free during specially crafted file parsing. CVSS 3.1 is 3.3: local attack vector, low complexity, no privileges, required user interaction, and low confidentiality impact only.
Likely exposure
Exposure is most likely on endpoints with Adobe Illustrator 25.2.3 or earlier, especially where users receive and open untrusted design, PDF, or Illustrator-related files.
Exploitation context
Sources indicate exploitation requires a victim to open a malicious file. The bundle provides no KEV listing and no cited evidence of active exploitation.
Researcher notes
The evidence supports an information disclosure issue only, not code execution. Affected version detail is limited to Illustrator 25.2.3 and earlier in the bundle; use Adobe and ZDI advisories for authoritative remediation context.
Mitigation direction
- Review Adobe APSB21-42 and apply the vendor-recommended Illustrator update or remediation.
- Identify and prioritize Illustrator installations at version 25.2.3 or earlier.
- Restrict opening untrusted Illustrator or PDF-related files from unknown senders.
- Use endpoint controls and user training to reduce malicious attachment handling.
Validation and detection
- Inventory endpoints for installed Adobe Illustrator versions.
- Confirm affected versions are remediated according to Adobe APSB21-42.
- Review helpdesk or EDR telemetry for suspicious Illustrator file-opening events.
- Validate email and web controls for blocking risky file attachments.
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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-36008 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/illustrator/apsb21-42.htmlCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-21-1146/CVE 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.