CVE-2023-21528: microsoft microsoft sql server 2008 r2 service pack 3 (qfe) Heap-based Buffer Overflow
CVSS: 7.8v3.1HighModified
Published 14-02-2023Last modified 19-08-2026
Vulnerability summary
CVE-2023-21528 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in microsoft microsoft sql server 2008 r2 service pack 3 (qfe). EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.3% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 14-02-2023PublishedVulnerability first disclosed.
- 19-08-2026Last modifiedVulnerability information updated.
Description
Microsoft SQL Server Remote Code Execution Vulnerability
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
32%
Versus all other CVEs
30-day change
0.00 pp
From 0.39% on 19-09-2026
19-09-202619-10-2026
EPSS score0.40%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft14 products
- microsoft sql server 2008 r2 service pack 3 (qfe)≥ 10.0.0, < 10.50.6785.2
- microsoft sql server 2008 service pack 4 (qfe)≥ 10.0.0, < 10.0.6814.4
- microsoft sql server 2012 for x64-based systems service pack 4 (qfe)≥ 11.0.0, < 11.0.7512.11
- microsoft sql server 2012 service pack 4 (qfe)≥ 11.0.0, < 11.0.7512.11
- microsoft sql server 2014 service pack 3 (cu 4)≥ 12.0.0, < 12.0.6174.8
1 vendor · 14 products