CVE-2021-24112: microsoft mono Code Injection
CVSS: 8.1v3.1HighModified
AliasesGHSA-rxg9-xrhp-64gjBIT-dotnet-2021-24112BIT-dotnet-sdk-2021-24112
Published 25-02-2021Last modified 07-10-2026
Vulnerability summary
CVE-2021-24112 is a high (CVSS 8.1) Code Injection vulnerability in microsoft mono. EPSS estimates a 3.45% chance of exploitation in the next 30 days, higher than 88.8% of scored vulnerabilities.
CVSS score
8.1/10
010
High · v3.1 (CVE.org)EPSS score
3.45%
0%100%
Low · +0.18 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 25-02-2021PublishedVulnerability first disclosed.
- 07-10-2026Last modifiedVulnerability information updated.
Description
.NET Core Remote Code Execution Vulnerability
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.1Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:CSources3 sources · 8.1–9.8
- OSV · NugetEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
- NVDNIST8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
3.45%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
+0.18 pp
From 3.27% on 19-09-2026
19-09-202619-10-2026
EPSS score3.45%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft9 products
- mono≥ 6.12.0, < 6.12.0.122
- mono 6.12.0≥ 6.12.0, < publication
- .net≥ 5.0, ≤ 5.0.2
- .net 5.0≥ 5.0.0, < publication
- .net_core≥ 2.1, ≤ 2.1.24 | ≥ 3.1, ≤ 3.1.11
NuGet1 product
- System.Drawing.Common≥ 4.0.0, < 4.7.2 | ≥ 5.0.0, < 5.0.3
2 vendors · 10 products
References
3 links
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24112X Refsource MISCWEBPatchVendor Advisory