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CVE Record

CVE-2026-27285: InDesign Desktop | Heap-based Buffer Overflow (CWE-122)

InDesign Desktop versions 20.5.2, 21.2 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to crash the application or disrupt its functionality. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

A malicious InDesign file can crash affected desktop installations when opened, interrupting design and publishing work. The supplied evidence indicates an availability impact only; it does not establish data theft, data modification, or code execution.

Executive priority

Schedule prompt remediation through normal endpoint maintenance, prioritizing publishing-critical and externally facing design teams. Emergency incident response is not supported by the supplied evidence, but repeated crashes could disrupt production workflows.

Technical view

CVE-2026-27285 is a heap-based buffer overflow in Adobe InDesign Desktop 20.5.2, 21.2, and earlier. Exploitation requires a user to open a malicious file. CVSS 3.1 is 5.5, reflecting local delivery, required interaction, and high availability impact without confidentiality or integrity impact.

Likely exposure

Exposure is concentrated on endpoints running affected InDesign versions, especially where users receive files from external or untrusted sources. Systems without InDesign, unaffected releases, and users who cannot open attacker-supplied files have lower exposure.

Exploitation context

The supplied sources do not report active exploitation, and the CVE is not listed as KEV in the bundle. An attacker must persuade a victim to open a malicious file; the documented outcome is an application crash or disrupted functionality.

Researcher notes

The documented weakness is CWE-122 with availability-only CVSS impact. The bundle does not provide root-cause detail, proof-of-concept evidence, attack prevalence, or confirmation of impacts beyond denial-of-service. Treat broader security consequences as unverified.

Mitigation direction

  • Inventory Adobe InDesign Desktop versions across managed endpoints.
  • Consult Adobe advisory APSB26-32 and deploy its recommended corrected release.
  • Prioritize users who routinely receive InDesign files from external parties.
  • Until updated, restrict opening unexpected or untrusted InDesign files.

Validation and detection

  • Confirm installations are not running 20.5.2, 21.2, or earlier.
  • Verify endpoint-management reports show the vendor-recommended release installed.
  • Review software inventory for unmanaged or rarely connected design workstations.
  • Confirm file-handling guidance reaches teams accepting externally supplied design assets.
Prepared
Confidence
high
Sources
3

Public sources used

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

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cwe · low confidence lookup

CWE-122: Exact CWE lookup

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cve · low confidence lookup

CVE-2026-27285 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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
1ADP providers
2Source links

SSVC decision data

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

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
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H1.83.6adobe

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2026-27285Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AdobeInDesign Desktop0, 21.3, 0, 20.5.3unaffected
Weakness

CWE details

CWE-122

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