Security readout for executives and security teams
Plain-English summary
A malicious PDF could trigger memory corruption in Adobe Acrobat or Reader and potentially run code as the user who opened it. The main business risk is phishing or document-delivery attacks against staff who handle external PDFs. Successful exploitation could expose files, alter data, or disrupt a workstation.
Executive priority
Treat this as a high-priority endpoint patching issue, especially for teams that regularly open outside PDFs. It is not confirmed actively exploited in the provided sources, but impact is high if a user opens a malicious file.
Technical view
CVE-2022-28838 is a CWE-416 use-after-free affecting Adobe Acrobat Pro DC version 22.001.2011x and earlier, 20.005.3033x and earlier, and 17.012.3022x and earlier. The CVSS 3.1 score is 7.8. Exploitation requires opening a malicious file and can result in arbitrary code execution in the current user's context.
Likely exposure
Organizations are likely exposed where Adobe Acrobat or Reader installations match the affected version ranges and users receive PDFs from external or untrusted sources.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation evidence. Exploitation requires user interaction: a victim must open a malicious file.
Researcher notes
The record identifies a use-after-free in doc flattenPages with local attack vector, low complexity, no privileges, and required user interaction. The source bundle has limited product-version detail and an affected-product inconsistency, so validate exact product coverage against Adobe APSB22-16.
Mitigation direction
- Apply Adobe's security updates referenced in APSB22-16.
- Inventory Acrobat and Reader versions across managed endpoints.
- Prioritize remediation for users handling external PDFs.
- Use email and web controls to reduce delivery of untrusted PDFs.
- Check Adobe guidance for any environment-specific mitigations.
Validation and detection
- Compare installed Adobe versions against the affected version ranges.
- Confirm patched versions are deployed on managed endpoints.
- Review endpoint software inventory for legacy Acrobat branches.
- Check email and endpoint telemetry for suspicious PDF delivery patterns.
- Verify user groups handling external PDFs received priority remediation.
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 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-2022-28838 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.
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:H/A:H1.85.9adobeVulnerability 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
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/apsb22-16.htmlCVE reference, adobe · 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.