Security readout for executives and security teams
Plain-English summary
Adobe Bridge 11.1 and earlier can read memory outside expected bounds while parsing a malicious PDF file. This could expose limited memory data and help weaken defenses such as ASLR. The issue requires a user to open a malicious file, so business urgency is lower than a remotely exploitable server flaw.
Executive priority
Treat this as a routine endpoint remediation item, not an emergency, unless affected users frequently receive untrusted files. Prioritize patching creative workstations and reducing exposure to unknown PDFs.
Technical view
CVE-2021-36074 is a CWE-125 out-of-bounds read in Adobe Bridge PDF parsing. CVSS is 3.3 low, with local attack vector, no privileges required, user interaction required, and low confidentiality impact only. Sources do not indicate integrity or availability impact.
Likely exposure
Exposure is mainly endpoint-based: users with Adobe Bridge 11.1 or earlier, especially creative or marketing teams handling external PDF files. Server exposure is not supported by the provided sources.
Exploitation context
The provided sources state exploitation requires a victim to open a malicious file. CISA KEV status is false, and no cited source in the bundle confirms active exploitation or public exploit availability.
Researcher notes
Evidence supports a low-severity memory disclosure useful for mitigation bypass, not direct code execution. Fix details are not included in the bundle beyond the Adobe advisory reference, so remediation should track APSB21-69 rather than assumed version targets.
Mitigation direction
- Inventory Adobe Bridge installations and identify versions 11.1 or earlier.
- Apply Adobe guidance from APSB21-69 for affected Bridge installations.
- Reduce handling of untrusted PDF files in Adobe Bridge until updated.
- Use endpoint protections and least privilege on creative workstations.
- Educate users not to open unexpected files from untrusted sources.
Validation and detection
- Confirm installed Adobe Bridge versions across managed endpoints.
- Check whether affected systems are updated according to APSB21-69.
- Verify users handling external PDFs are included in the inventory.
- Review endpoint alerts for suspicious files opened in Adobe Bridge.
- Document residual risk where legacy Bridge versions remain.
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
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CWE-125: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-36074 mapping review
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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/bridge/apsb21-69.htmlCVE 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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.