CVE-2026-62897: microsoft microsoft .net framework 3.5 Integer Overflow or Wraparound
CVSS: 7.0v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-62897GHSA-fx4q-gjrx-2jw6BIT-dotnet-2026-62897BIT-dotnet-sdk-2026-62897
Published 11-08-2026Last modified 08-10-2026
Vulnerability summary
CVE-2026-62897 is a high (CVSS 7.0) Integer Overflow or Wraparound vulnerability in microsoft microsoft .net framework 3.5. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.3% of scored vulnerabilities.
CVSS score
7.0/10
010
High · v3.1 (CVE.org)EPSS score
0.37%
0%100%
Low · +0.03 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
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 7.0Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.0HighCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · NugetEcosystem advisory · calculated7.0HighCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.0HighCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
29%
Versus all other CVEs
30-day change
+0.03 pp
From 0.34% on 19-09-2026
19-09-202619-10-2026
EPSS score0.37%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft13 products
- microsoft .net framework 3.5≥ 3.5.0, < 2.0.50727.9183 & 3.0.30729.9169
- microsoft .net framework 3.5 and 4.7.2≥ 4.7.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0
- microsoft .net framework 3.5 and 4.8≥ 4.8.0, < 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0
- microsoft .net framework 4.8.1≥ 4.8.0.0, < 4.8.9344.0
- microsoft visual studio 2022 version 17.14≥ 17.14.0, < 17.14.38
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 · 17 products
References
8 links
- github.com/dotnet/wpfPACKAGE