Security readout for executives and security teams
Plain-English summary
A malicious file opened in Adobe FrameMaker 2022.8 or earlier could run attacker-controlled code with the victim’s account permissions. Successful exploitation could expose or alter data and disrupt the workstation. The attack requires a user to open the file, reducing—but not removing—the risk.
Executive priority
Prioritize remediation on endpoints running affected FrameMaker versions, especially where users routinely handle outside files. Treat this as a high-priority workstation risk, but not as an emergency active-exploitation event based on the supplied evidence.
Technical view
CVE-2026-27296 is a CWE-191 integer-underflow vulnerability in Adobe FrameMaker 2022.8 and earlier. It may permit arbitrary code execution as the current user after opening a malicious file. Its CVSS 3.1 score is 7.8: local attack vector, low complexity, no privileges required, user interaction required, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to systems running FrameMaker 2022.8 or earlier. Workstations where users open externally supplied or otherwise untrusted files face the greatest practical risk. The supplied evidence does not identify affected file formats, operating systems, or server-side exposure.
Exploitation context
Exploitation requires a victim to open a malicious file. The supplied bundle marks the CVE as absent from CISA KEV and provides no evidence of active exploitation, public exploit availability, observed attacks, or indicators of compromise.
Researcher notes
The source bundle identifies integer underflow and resulting arbitrary code execution but provides no root-cause detail, affected file format, exploit primitive, public proof of concept, or detection indicators. The structured affected range appears consistent with versions before 2022.9, while the narrative explicitly states 2022.8 and earlier; validate remediation through Adobe’s advisory.
Mitigation direction
- Inventory Adobe FrameMaker installations and identify versions 2022.8 or earlier.
- Consult Adobe advisory APSB26-36 and apply its documented update or remediation.
- Until remediated, prevent affected users from opening untrusted files in FrameMaker.
- Use least-privileged user accounts to reduce the impact of code execution.
Validation and detection
- Verify installed FrameMaker versions across managed endpoints.
- Confirm remediation against Adobe APSB26-36 rather than assuming a specific fixed version.
- Test that controls prevent affected FrameMaker installations from opening untrusted files.
- Review endpoint telemetry for suspicious activity following FrameMaker file opens; no CVE-specific indicators were supplied.
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-191: 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-2026-27296 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/framemaker/apsb26-36.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.
Integer Underflow (Wrap or Wraparound)
Integer Underflow (Wrap or Wraparound) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.