Security readout for executives and security teams
Plain-English summary
Malwarebytes EDR 1.0.11 on Linux can miscalculate hashes for data larger than 4GB because a 32-bit integer wraps. That can make different data appear to have the same hash, weakening trust in EDR integrity checks and related security decisions.
Executive priority
Treat as a high-priority endpoint security product issue where affected Linux deployments exist. It is not described as remotely exploitable or actively exploited, but it affects trust in EDR hashing, which can influence detection, integrity validation, and incident response confidence.
Technical view
The issue is a CWE-190 integer overflow in Malwarebytes EDR 1.0.11 Linux utility hashing functions. Inputs exceeding 4GB can be truncated during hash calculation, allowing hash collisions between distinct byte strings. CVSS 3.1 is 8.2 with local access, low complexity, high privileges, no user interaction, and changed scope.
Likely exposure
Likely limited to organizations running Malwarebytes EDR 1.0.11 on Linux. The bundle's affected-product metadata is incomplete, so teams should verify deployed versions directly against Malwarebytes guidance and asset inventory.
Exploitation context
The source bundle does not show active exploitation and KEV is false. The CVSS vector requires local access and high privileges, reducing broad remote risk, but successful abuse could undermine confidentiality, integrity, and availability assumptions tied to EDR hashing.
Researcher notes
Evidence is narrow but technically specific. Focus analysis on 32-bit length handling in Linux EDR hashing utilities and the security impact of collision-prone truncation. Do not assume affected versions beyond Malwarebytes EDR 1.0.11 unless vendor guidance confirms them.
Mitigation direction
- Inventory Linux hosts running Malwarebytes EDR and identify version 1.0.11.
- Review the Malwarebytes advisory for fixed versions or supported mitigation guidance.
- Upgrade or otherwise remediate affected installations according to vendor instructions.
- Limit high-privilege local access to EDR-managed Linux systems.
- Prioritize hosts handling large files or security-sensitive telemetry.
Validation and detection
- Confirm whether Malwarebytes EDR 1.0.11 is installed on Linux assets.
- Check Malwarebytes advisory status for version-specific remediation details.
- Review EDR workflows that hash files or data objects larger than 4GB.
- Verify remediated hosts report a vendor-supported, non-affected version.
- Document any unresolved systems and compensating access controls.
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-190: 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 lookupCVE-2023-29146 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
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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:H/UI:N/S:C/C:H/I:H/A:H1.56CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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://www.malwarebytes.com/secure/cves/cve-2023-29146CVE reference, mitre
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 Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.