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CVE Record

CVE-2025-9032: Avira antivirus engine heap buffer OOB read when scanning a malformed PE file

Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed Windows PE file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.98.

HighCVSS 7.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Avira Antivirus can mishandle a malformed Windows PE file during scanning. A malicious file could crash the antivirus engine or potentially cause local code execution. The issue affects engine builds before 8.3.70.98 across Windows, macOS, and Linux.

Executive priority

Treat this as a high-priority endpoint security update. The vulnerable component is defensive software, so crashes or code execution in that process can weaken protection where users or systems handle untrusted files.

Technical view

CVE-2025-9032 is a heap buffer out-of-bounds read in the Avira Antivirus engine PE scanning path. The CVSS 3.1 vector is 7.8 high: local attack vector, low complexity, no privileges, user interaction required, with high confidentiality, integrity, and availability impact.

Likely exposure

Organizations using Avira Antivirus engine builds earlier than 8.3.70.98 on Windows, macOS, or Linux are potentially exposed. The sources do not identify specific editions, deployment modes, or downstream OEM integrations.

Exploitation context

The CVE is not listed as KEV in the supplied bundle, and no cited source states active exploitation. Exploitation appears tied to scanning a malformed Windows PE file, requiring the file to reach the endpoint or scanning workflow.

Researcher notes

Public evidence is limited to the CVE record, CVE List entry, and Gen Digital advisory landing page. The bundle names CWE-125 and the affected engine threshold, but does not provide root-cause detail, proof-of-concept status, or exploit telemetry.

Mitigation direction

  • Update Avira Antivirus engine to build 8.3.70.98 or later.
  • Check Gen Digital security advisories for product-specific update instructions.
  • Prioritize endpoints that ingest untrusted files or email attachments.
  • Monitor antivirus engine crashes until updates are confirmed.
  • Do not rely on manual file blocking as the primary control.

Validation and detection

  • Inventory Avira Antivirus engine build versions across Windows, macOS, and Linux endpoints.
  • Confirm each deployed engine is 8.3.70.98 or later.
  • Review endpoint management logs for failed or delayed engine updates.
  • Check security monitoring for antivirus engine crashes during file scanning.
  • Track Gen Digital advisory updates for added scope or remediation details.
Prepared
Confidence
medium
Sources
3

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-125: 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 lookup
cve · low confidence lookup

CVE-2025-9032 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
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

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: total

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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9GEN

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2025-9032Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Products and packages named in the record

VendorProductVersion / packageStatus
Gen DigitalAvira Antivirus0affected
Weakness

CWE details

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

CWE-125 · source CWE mapping

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.