Security readout for executives and security teams
Plain-English summary
Adobe Bridge 11.0.2 and earlier can disclose memory information when a user opens a maliciously crafted file. The impact is limited to confidentiality in the current user context. Business urgency is generally low, but higher for teams that process untrusted media assets.
Executive priority
Treat as routine patching unless Adobe Bridge is widely used with untrusted files. The issue is low severity, requires user action, and affects confidentiality only, but exposed creative workflows should be updated promptly.
Technical view
The CVE describes CWE-824, access of an uninitialized pointer, in Adobe Bridge file parsing. The CVSS 3.1 vector is local, low complexity, no privileges, user interaction required, unchanged scope, and low confidentiality impact only.
Likely exposure
Exposure is most likely on workstations running Adobe Bridge 11.0.2 or earlier, especially where users receive or review external media files. Non-interactive servers are unlikely to be exposed unless Bridge is used in a user workflow.
Exploitation context
The provided bundle does not report CISA KEV listing or active exploitation. Exploitation requires user interaction: a victim must open a malicious file. The source evidence does not support claims of remote, unauthenticated, no-click exploitation.
Researcher notes
The bundle identifies Adobe Bridge MP4 or crafted-file parsing and CWE-824, but does not include exploit details, fixed version text, or independent exploitation evidence. Avoid expanding affected products beyond Adobe Bridge 11.0.2 and earlier.
Mitigation direction
- Identify Adobe Bridge installations and versions across managed endpoints.
- Review Adobe APSB21-53 and apply the vendor-recommended Bridge update.
- Limit opening media files from untrusted or unsolicited sources.
- Use endpoint controls to reduce exposure to unknown file attachments.
- Prioritize creative or media-processing teams handling external assets.
Validation and detection
- Confirm whether Adobe Bridge 11.0.2 or earlier is installed.
- Check software inventory for systems owned by high-risk media workflows.
- Verify update status against Adobe APSB21-53 guidance.
- Review security telemetry for suspicious files opened by Bridge users.
- Confirm user awareness controls for unsolicited media attachments.
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-824: 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-2021-35991 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
- 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/apsb21-53.htmlCVE reference · 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.
Access of Uninitialized Pointer
Access of Uninitialized Pointer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.