CVE-2026-50527

Aliases:GHSA-mmjf-rqrv-855vBIT-dotnet-2026-50527BIT-dotnet-sdk-2026-50527CGA-2248-2q95-px33CGA-2598-3q78-c2j9CGA-29vw-wm4v-xqr9CGA-2w64-m4mh-h6f9CGA-39vg-w7x6-mrw6CGA-448h-5cc3-wv78CGA-5jqp-jwm7-2g72CGA-62jg-p2wr-jxrjCGA-67j3-c7j4-wmx7CGA-68cp-2g6f-hfcrCGA-6vm3-4x7w-wjq6CGA-92w8-2f38-c4jpCGA-97j2-2qhj-xg9hCGA-9xw5-659w-j4cjCGA-c4r2-g7px-7w3xCGA-f9vq-g53c-88fxCGA-fjf4-2g8j-7g62CGA-h35w-v29h-5ppqCGA-hpgh-q6jv-mjh2CGA-jrxc-x3jv-xhfxCGA-m3h5-r5fj-f8mxCGA-p9c6-9hpg-634xCGA-q5fv-wwq3-x3j5CGA-q992-fh42-4975CGA-qwq7-2pfw-f4mhCGA-r2j2-ffwx-hcw7CGA-rj86-w646-q4cqCGA-rxvx-5hxx-87x4CGA-vcgw-qh79-7h8cCGA-vp3x-x7q8-fx5cCGA-wjg8-8pwr-j5cjCGA-xf7r-7qgw-j3jwCGA-xv3g-g472-f3j4CGA-xx38-hwqg-54v3
Advisory lineage Upstream: 0 Downstream: 18
Analyzed
Published: 14 Jul 2026, 19:29
Last modified:17 Sept 2026, 22:32

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.84% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

14 Jul 2026, 19:29
Published
Vulnerability first disclosed
17 Sept 2026, 22:32
Last Modified
Vulnerability information updated

Description

Stack-based buffer overflow in .NET Framework allows an unauthorized attacker to deny service over a network.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.84%• Percentile: 56%

Techniques & Countermeasures

  • CWE-121•Stack-based Buffer Overflow

    A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Affected Systems

  • chainguard•dotnet-bootstrap-8

    < 8.0.130-r0

  • chainguard•dotnet-bootstrap-9

    < 9.0.120-r0

  • chainguard•promitor

    < 2.16.0-r3

  • wolfi•dotnet-bootstrap-8

    < 8.0.130-r0

  • wolfi•dotnet-bootstrap-9

    < 9.0.120-r0

  • wolfi•promitor

    < 2.16.0-r3

  • microsoft•microsoft .net framework 3.5

    ≥ 3.5.0, < 2.0.50727.8983 & 3.0.30729.8978

  • microsoft•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•microsoft .net framework 3.5 and 4.8

    ≥ 4.8.0, < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0

  • microsoft•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•microsoft .net framework 4.6.2/4.7/4.7.1/4.7.2

    ≥ 4.7.0, < 4.7.4143.0

  • microsoft•microsoft .net framework 4.8

    ≥ 4.8.0, < 4.8.4803.0

  • microsoft•microsoft visual studio 2022 version 17.12

    ≥ 17.12.0, < 17.12.22

  • microsoft•microsoft visual studio 2022 version 17.14

    ≥ 17.14.0, < 17.14.36

  • microsoft•microsoft visual studio 2026 version 18.7

    ≥ 18.0, < 18.7.4

  • microsoft•.net

    ≥ 8.0.0, < 8.0.29 | ≥ 9.0.0, < 9.0.18 | ≥ 10.0.0, < 10.0.6

  • microsoft•.net 10.0

    ≥ 10.0.0, < 10.0.6 | ≥ 10.0.0, < 10.0.10

  • microsoft•.net 8.0

    ≥ 8.0.0, < 8.0.29

  • microsoft•.net 9.0

    ≥ 9.0.0, < 9.0.18

  • microsoft•.net_framework

    4.8 | 4.6.2 | 4.7 | 4.7.1 | 4.7.2 | 3.5 | 4.8.1

  • microsoft•visual_studio_2022

    ≥ 17.12.0, < 17.12.22 | ≥ 17.14.0, < 17.14.36

  • microsoft•visual_studio_2026

    ≥ 18.7.0, < 18.7.4

  • NuGet•System.Security.Cryptography.Xml

    ≥ 10.0.0, < 10.0.10 | ≥ 9.0.0, < 9.0.18 | ≥ 8.0.0, < 8.0.4

References (6)