CVE-2026-62836

HIGH 8.7 ALL-YEARS

Published 2026-08-06 · Last modified 2026-10-21 · microsoft · NVD: Analyzed

Improper restriction of communication channel to intended endpoints in Azure SQL Managed Instance allows an unauthorized attacker to elevate privileges over a network.

ELEVATED IMPACT

Severe if exploited (CVSS 8.7), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.6%chance of exploitation in 30 days · 51st percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable no

Impact if exploited

8.7CVSS 3.1 · HIGH · CNA

ConfidentialityHigh
IntegrityHigh
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Microsoft

Products Azure Sql Managed Instance

Weakness (CWE)

CWE-923: : Improper Restriction of Communication Channel to Intended Endpoints

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Microsoft	Azure Sql Managed Instance	*

All CVSS metrics

HIGH 8.7 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
HIGH 8.7 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CRITICAL 10 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References

Patches & mitigations

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62836 vendor-advisorypatchVendor AdvisoryCVE record · microsoft · Updated 2026-10-21T20:51:07.500Z
NVD · CVE-2026-62836 · Updated 2026-10-24T16:10:00.153

Advisories

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-54311 ADVISORYEUVD · EUVD-2026-54311

Sources: NVD · CVE.org · All sources and attribution · EPSS