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CVE Record

CVE-2023-38225: ZDI-CAN-21118: Adobe Acrobat Reader DC AcroForm Use-After-Free Remote Code Execution Vulnerability

Adobe Acrobat Reader versions 23.003.20244 (and earlier) and 20.005.30467 (and earlier) are affected by a Use After Free vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

HighCVSS 7.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This flaw lets a malicious PDF trigger code execution when opened in affected Adobe Acrobat Reader versions. It runs with the current user's permissions, so business impact depends on user privilege and endpoint controls. The bundle does not show active exploitation, but the phishing-style delivery path makes timely patch validation important.

Executive priority

Prioritize remediation in the normal high-severity endpoint patch cycle, faster for teams handling external documents. The issue can become code execution after a user opens a malicious file, but the provided sources do not establish active exploitation.

Technical view

CVE-2023-38225 is a CWE-416 use-after-free in Adobe Acrobat Reader DC AcroForm handling. Affected versions include 23.003.20244 and earlier, and 20.005.30467 and earlier. Exploitation requires user interaction by opening a malicious file and may lead to arbitrary code execution as the current user.

Likely exposure

Organizations are exposed where Adobe Acrobat Reader versions at or below the listed affected builds remain installed, especially on endpoints that routinely open external PDFs from email, web downloads, portals, or shared drives.

Exploitation context

The supplied bundle marks KEV as false and provides no cited evidence of active exploitation. Exploitation requires a victim to open a malicious file. Treat this as a realistic document-delivery risk, not confirmed in-the-wild exploitation from the provided evidence.

Researcher notes

Evidence is limited to CVE metadata and Adobe's advisory reference. The CVSS vector is local attack vector with required user interaction, no privileges, unchanged scope, and high confidentiality, integrity, and availability impact. Do not infer exploit availability or fixed build numbers beyond vendor guidance.

Mitigation direction

  • Review Adobe APSB23-30 for the vendor-fixed Reader versions.
  • Update affected Acrobat Reader installations according to Adobe guidance.
  • Restrict opening untrusted PDFs until affected systems are remediated.
  • Use endpoint controls to reduce risk from external PDF attachments.
  • Keep users operating without unnecessary local administrative privileges.

Validation and detection

  • Inventory Adobe Acrobat Reader versions across managed endpoints.
  • Compare installed versions with 23.003.20244 and 20.005.30467 thresholds.
  • Confirm patch status against Adobe APSB23-30.
  • Prioritize users who receive or process external PDF files.
  • Check whether Reader is the default handler for downloaded PDFs.
Prepared
Confidence
high
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

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.

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description · low confidence lookup

Execution 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 lookup
cve · low confidence lookup

CVE-2023-38225 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
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

Official CVE source material

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.

1CVSS vectors
3Timeline events
2ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9adobe

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2023-38225Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AdobeAcrobat Reader0affected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-416 · source CWE mapping

Use After Free

Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.