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.
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.
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.
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.
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.