Microsoft · Privilege escalation
SQL Server Elevation of Privilege Vulnerability
At a glance
Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.
Briefing
There is no written leader briefing for this story yet. These questions come from the facts we hold.
Questions to ask IT
- Do we run Microsoft Sql Server, and which versions?
- If it is not yet patched, what mitigation is in place, and will the fix be done by 16 Nov?
Next steps
- Confirm whether this affects systems or suppliers in your estate
Vulnerability facts
Full CVE detail CVE-2026-96956- 8.0 · HighExploitable over the network with an administrator-level account, under specific conditions, and no one has to click or open anything. High impact on confidentiality, integrity and availability, and it can reach beyond the vulnerable system.CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Not listed
- ~0.4% estimated chance of attack in 30 days
No technical write-up beyond these facts and the summary below yet.
Next steps
- Review the advisory against your asset inventory and patch cadence
Summary
- A stack-based buffer overflow in SQL Server could allow an authorised attacker to elevate privileges over a network.
Read the original reportMicrosoft Security Update Guide RSS(opens in a new tab)
Products and services involved
- Microsoft Sql Server96% match confidence · CVE-2026-96956
Pulse
Last checked 3 Nov · Recheck overdue since 10 Nov 2026, 03:35 UK time · 2 quiet checks collapsed
- Story13 Oct 2026, 21:41 UK time · 13 Oct
Linked reporting from Microsoft Security Update Guide RSS (vendor psirt).
Read source (Microsoft Security Update Guide RSS) - Signal17 Oct 2026, 12:35 UK time · 17 Oct
in the next 30 days first recorded at 0.4% (lower likelihood signal, not confirmed exploitation).
2 entries so far. The timeline chart appears once this story has more history.
Sources
CVE-2026-96956 SQL Server Elevation of Privilege Vulnerability
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
SQL Server Elevation of Privilege Vulnerability
- ProbableSummary fact75% confidence
Stack-based buffer overflow in SQL Server allows an authorised attacker to elevate privileges over a network.
- ConfirmedCVE identifier95% confidence
Event involves CVE-2026-96956

