CVE-2026-62898: microsoft microsoft visual studio 2022 version 17.14 Use After Free
CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-62898GHSA-c494-m2fq-59mxBIT-dotnet-2026-62898BIT-dotnet-sdk-2026-62898
Published 11-08-2026Last modified 08-10-2026
Vulnerability summary
CVE-2026-62898 is a high (CVSS 7.5) Use After Free vulnerability in microsoft microsoft visual studio 2022 version 17.14. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.2% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
1.03%
0%100%
Low · -0.09 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-08-2026PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
Description
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:CSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · NugetEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.03%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
-0.09 pp
From 1.11% on 21-09-2026
21-09-202621-10-2026
EPSS score1.03%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft8 products
- microsoft visual studio 2022 version 17.14≥ 17.14.0, < 17.14.38
- microsoft visual studio 2026 version 18.8≥ 18.0, < 18.8.3
- .net≥ 8.0.0, < 8.0.30 | ≥ 9.0.0, < 9.0.19 | ≥ 10.0.0, < 10.0.11
- .net 10.0≥ 10.0.0, < 10.0.11
- .net 8.0≥ 8.0.0, < 8.0.30
NuGet3 products
- Microsoft.NETCore.App.Runtime.win-arm64≥ 10.0.0, < 10.0.11 | ≥ 9.0.0, < 9.0.19 | ≥ 8.0.0, < 8.0.30
- Microsoft.NETCore.App.Runtime.win-x64≥ 10.0.0, < 10.0.11 | ≥ 9.0.0, < 9.0.19 | ≥ 8.0.0, < 8.0.30
- Microsoft.NETCore.App.Runtime.win-x86≥ 10.0.0, < 10.0.11 | ≥ 9.0.0, < 9.0.19 | ≥ 8.0.0, < 8.0.30
Ubuntu1 product
- dotnet7All versions (No fix recorded)
3 vendors · 12 products
References
7 links- github.com/dotnet/runtimePACKAGE