Security readout for executives and security teams
CVE-2026-0861 affects GNU C Library memory-alignment functions. Extremely large allocation size and alignment values can trigger integer overflow and heap corruption. Business risk is highest where applications let untrusted input influence both values. The sources state this usage is uncommon, so broad exploitation appears less likely than the high severity suggests. Linux systems using glibc 2.30-2.42 may be exposed. Practical exposure depends on applications or libraries passing attacker-influenced size and alignment into the affected allocation APIs. Typical alignment values are fixed constants, reducing real-world reach. Treat as high-priority inventory and patch-tracking work, not confirmed emergency exploitation. Escalate if critical applications accept untrusted parameters that influence memory allocation alignment and size. Otherwise remediate through normal high-severity Linux platform update processes. Mitigation focus: Inventory Linux assets and identify glibc versions in the reported 2.30-2.42 range.; Monitor GNU, distribution, and vendor advisories for fixed glibc packages.; Apply vendor-provided glibc updates when available and after standard compatibility testing..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookupCVE-2026-0861 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
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CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.55.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
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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.