Affects Microsoft SQL Server, a widely deployed enterprise DB; remote code execution risk can disrupt operations and data integrity.
CVE-2026-85886
Heap overflow in Microsoft SQL Server allows remote code execution.
Is CVE-2026-85886 being exploited?
Not confirmed. CVE-2026-85886 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.40% probability of exploitation in the next 30 days.
How severe is CVE-2026-85886?
CVE-2026-85886 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-85886?
Yes. A fix has been recorded for CVE-2026-85886. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-85886 affect?
CVE-2026-85886 affects Microsoft SQL Server, Windows hosts running SQL Server. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-85886?
Install Microsoft's security update immediately; restrict SQL access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Heap-based buffer overflow enables an authorized attacker over the network to execute arbitrary code on SQL Server, leading to full compromise and lateral movement.
Immediate action required