CVE-2026-21262
Exploitation reported by one source. First attested on 2026-04-19 by GCVE · kevintel.
- Published2026-03-10
- Fixed in13.0.7075.5 · 13.0.6480.4
- WeaknessCWE-284
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Timeline
dates in UTC- 2026-03-1018:18CVE publishedNVD
- 2026-04-1913:46Listed as exploited by GCVEGCVE
- 2026-04-1913:46Exploitation first reportedGCVE
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-21262?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-21262?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 13.0 | ≥ 13.0.7000.253, < 13.0.7075.5 | 13.0.7075.5 | NVD |
| 13.0 | ≥ 13.0.6300.2, < 13.0.6480.4 | 13.0.6480.4 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 14.0 | ≥ 14.0.3006.16, < 14.0.3520.4 | 14.0.3520.4 | NVD |
| 14.0 | ≥ 14.0.1000.169, < 14.0.2100.4 | 14.0.2100.4 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.0 | ≥ 15.0.4003.23, < 15.0.4460.4 | 15.0.4460.4 | NVD |
| 15.0 | ≥ 15.0.2000.5, < 15.0.2160.4 | 15.0.2160.4 | NVD |
2 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Microsoft sql server 2016 to 13.0.7075.5 · 13.0.6480.4
Advisories and patches
- msrc.microsoft.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- 2026-03-10
- Last Modified
- 2026-07-10
- NVD status
- Analyzed
Frequently asked questions
What is CVE-2026-21262?
Is CVE-2026-21262 actively exploited?
What is the CVSS score for CVE-2026-21262?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.