Security readout for executives and security teams
Plain-English summary
A malicious file opened in Adobe Audition could let an attacker run code with the victim’s account permissions. The issue is serious because successful exploitation could expose, alter, or disrupt data, but it requires the user to open the file.
Executive priority
Treat this as a high-priority workstation update, particularly for creative teams handling externally supplied media. It is not an unauthenticated remote compromise, but a convincing malicious file could produce full confidentiality, integrity, and availability impact within the user’s security context.
Technical view
CVE-2026-21312 is an out-of-bounds write (CWE-787) in Adobe Audition 25.3 and earlier. It may enable arbitrary code execution as the current user. CVSS 3.1 rates it 7.8: local attack vector, low complexity, no privileges required, and required user interaction.
Likely exposure
Endpoints running Audition 25.3 or earlier are potentially exposed, especially where users receive or download untrusted files. Impact is constrained to the current user’s privileges, making privileged user accounts more consequential. The bundle’s structured version data is inconsistent with its description, so confirm applicability with Adobe.
Exploitation context
Exploitation requires a victim to open a malicious file in Audition. The supplied bundle does not identify active exploitation, and the CVE is not marked as included in KEV. No exploit availability or observed attack campaign is established by the provided evidence.
Researcher notes
The supplied description explicitly identifies versions 25.3 and earlier, while the structured affected array lists 0, 25.6, and 26.0 with a default unaffected status. That inconsistency prevents a definitive fixed-version conclusion from the bundle alone. Consult Adobe APSB26-14 before finalizing detection or remediation criteria.
Mitigation direction
- Review Adobe APSB26-14 and apply the vendor-supported remediation or fixed release.
- Until remediated, prevent Audition users from opening unsolicited or untrusted files.
- Use least-privileged accounts for Audition to limit the impact of successful code execution.
- Prioritize controls that quarantine suspicious files delivered through email or downloads.
Validation and detection
- Inventory installed Audition versions and identify systems running version 25.3 or earlier.
- Confirm the installed release against Adobe APSB26-14 because the bundle contains conflicting version metadata.
- Verify remediated endpoints no longer report a vulnerable Audition release.
- Review endpoint telemetry for unusual Audition child processes after opening downloaded or emailed files.
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-787: 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-2026-21312 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/audition/apsb26-14.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 Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.