Security readout for executives and security teams
Plain-English summary
This vulnerability can let a malicious PDF cause Adobe Acrobat to write outside intended memory and potentially run code as the logged-in user. The victim must open a malicious document. Business urgency is high where affected Adobe Acrobat software is common on endpoints handling external PDFs.
Executive priority
Treat as a high-priority endpoint patching issue, especially for staff processing external PDFs. It is not confirmed as actively exploited in the supplied evidence, but the potential impact is full compromise of the user's session.
Technical view
CVE-2020-24436 is a CWE-787 out-of-bounds write in Acrobat Pro DC PDF export handling, with CVSS 3.1 score 7.8. Supplied metadata also lists Adobe Acrobat Reader with unspecified versions, so product scope should be confirmed against Adobe APSB20-67.
Likely exposure
Exposure is most likely on user workstations with affected Adobe Acrobat Pro DC versions 2020.012.20048 and earlier, 2020.001.30005 and earlier, or 2017.011.30175 and earlier. Source metadata inconsistently references Acrobat Reader with unspecified versions.
Exploitation context
The supplied sources do not support active exploitation; KEV is false. Exploitation requires user interaction: opening a malicious document. Impact is code execution in the current user's context, so endpoint privileges matter.
Researcher notes
Evidence supports memory corruption, user interaction, and current-user code execution. The bundle has inconsistent product naming: title and description mention Acrobat Pro DC, while affected metadata lists Acrobat Reader with unspecified versions. Do not broaden scope without checking Adobe APSB20-67.
Mitigation direction
- Review Adobe APSB20-67 for affected product and version-specific guidance.
- Update affected Adobe Acrobat installations according to vendor guidance.
- Reduce exposure to untrusted PDFs on high-risk endpoints.
- Use endpoint controls to limit document-launched child process abuse.
- Prioritize users who routinely receive external documents.
Validation and detection
- Inventory Adobe Acrobat Pro DC and Acrobat Reader installations and versions.
- Compare installed versions against Adobe APSB20-67 affected ranges.
- Confirm endpoint controls cover suspicious PDF-driven process behavior.
- Check vulnerability management tooling for CVE-2020-24436 coverage.
- Verify remediation by rescanning representative endpoint groups.
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-787: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-24436 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/acrobat/apsb20-67.htmlCVE reference · x_refsource_MISC
- https://www.zerodayinitiative.com/advisories/ZDI-20-1355/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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.