CVE-2026-50647: microsoft microsoft .net framework 3.5 and 4.7.2 Infinite Loop
CVSS: 7.5v3.1HighAnalyzed
Published 14-07-2026Last modified 08-10-2026
Vulnerability summary
CVE-2026-50647 is a high (CVSS 7.5) Infinite Loop vulnerability in microsoft microsoft .net framework 3.5 and 4.7.2. EPSS estimates a 1.17% chance of exploitation in the next 30 days, higher than 67% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
1.17%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 14-07-2026PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.17%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
0.00 pp
From 1.17% on 20-09-2026
20-09-202620-10-2026
EPSS score1.17%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft32 products
- microsoft .net framework 3.5 and 4.7.2≥ 4.7.0, < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0
- microsoft .net framework 3.5 and 4.8≥ 4.8.0, < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0
- microsoft .net framework 3.5 and 4.8.1≥ 4.8.1, < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
- microsoft .net framework 4.6.2/4.7/4.7.1/4.7.2≥ 4.7.0, < 4.7.4143.0
- microsoft .net framework 4.8≥ 4.8.0, < 4.8.4803.0
1 vendor · 32 products
