Security readout for executives and security teams
Plain-English summary
CVE-2020-9711 is a medium-severity Adobe Acrobat Reader issue. If a user opens a malicious PDF, the attacker may read sensitive data from the application’s memory. It is not described as allowing system takeover or data modification in the provided sources.
Executive priority
Treat as routine but important desktop patching. The main business risk is unintended disclosure of sensitive memory data after a user opens a malicious PDF.
Technical view
Adobe Acrobat Reader versions 2020.009.20074, 2020.001.30002, 2017.011.30171, 2015.006.30523 and earlier have an out-of-bounds read vulnerability, CWE-125. CVSS 3.1 is 5.5: local attack vector, no privileges, user interaction required, high confidentiality impact only.
Likely exposure
Exposure is primarily on user workstations with affected Acrobat Reader versions installed. Risk is higher where users routinely receive or download PDF files from email, web, or external parties.
Exploitation context
Exploitation requires user interaction: the victim must open a malicious file. The provided sources do not indicate active exploitation, and the CVE is not marked as CISA KEV in the bundle.
Researcher notes
The source bundle identifies the vulnerable condition and affected version thresholds, but detailed fixed-version mapping should be confirmed in Adobe APSB20-48. No exploit availability or active exploitation is supported by the provided evidence.
Mitigation direction
- Review Adobe APSB20-48 for the official affected branches and fixed versions.
- Update Acrobat Reader beyond the affected versions listed by Adobe.
- Prioritize endpoints handling untrusted PDFs or external email attachments.
Validation and detection
- Inventory installed Acrobat Reader versions across managed endpoints.
- Compare versions against 2020.009.20074, 2020.001.30002, 2017.011.30171, and 2015.006.30523 or earlier.
- Confirm remediation status against Adobe APSB20-48 guidance.
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-125: 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-2020-9711 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:H/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.
SSVC decision data
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:N/A:N1.83.6adobeVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://helpx.adobe.com/security/products/acrobat/apsb20-48.htmlCVE reference, adobe · vendor-advisory
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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.