CVE-2026-62871: microsoft microsoft visual studio 2022 version 17.14 Heap-based Buffer Overflow
CVSS: 7.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-62871GHSA-vg44-h755-9hw7BIT-dotnet-2026-62871BIT-dotnet-sdk-2026-62871
Published 11-08-2026Last modified 08-10-2026
Vulnerability summary
CVE-2026-62871 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in microsoft microsoft visual studio 2022 version 17.14. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.47%
0%100%
Low · +0.07 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
Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · NugetEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
+0.07 pp
From 0.40% on 20-09-2026
20-09-202620-10-2026
EPSS score0.47%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Microsoft7 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 8.0≥ 8.0.0, < 8.0.30
- .net 9.0≥ 9.0.0, < 9.0.19
NuGet3 products
- Microsoft.WindowsDesktop.App.Runtime.win-arm64≥ 10.0.0, < 10.0.11 | ≥ 9.0.0, < 9.0.19 | ≥ 8.0.0, < 8.0.30
- Microsoft.WindowsDesktop.App.Runtime.win-x64≥ 10.0.0, < 10.0.11 | ≥ 9.0.0, < 9.0.19 | ≥ 8.0.0, < 8.0.30
- Microsoft.WindowsDesktop.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 · 11 products
References
8 links
- github.com/dotnet/wpfPACKAGE