How severe is CVE-2021-24112?

CVE-2021-24112 has a CVSS score of 8.1/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2021-24112?

CVE-2021-24112 affects the following packages: System.Drawing.Common (NuGet), System.Drawing.Common (NuGet). Ecosystems affected: NuGet.

How do I fix CVE-2021-24112?

Update System.Drawing.Common to 4.7.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-24112 is resolved across your whole dependency graph.

How do I detect CVE-2021-24112 in my NuGet dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for System.Drawing.Common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2021-24112 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2021-24112?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2021-24112 can be triaged on real exposure rather than presence alone.

Is CVE-2021-24112 actively exploited in the wild?

No public exploit code has been indexed for CVE-2021-24112 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2021-24112?

CVE-2021-24112 has an EPSS (Exploit Prediction Scoring System) score of 3.3%, placing it in the 88th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2021-24112 published, and has it been updated?

CVE-2021-24112 was published on February 25, 2021 and was last updated on July 9, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

.NET

.NET NuGet

Not in CISA KEV

HIGH severity

CVE-2021-24112 — System.Drawing.Common

HIGH

CVE-2021-24112 is a high-severity (CVSS 8.1) remote code execution vulnerability in System.Drawing.Common. A fix is available for System.Drawing.Common — see the affected versions and patch details below.

.NET Core Remote Code Execution Vulnerability

Also known asBIT-dotnet-2021-24112BIT-dotnet-sdk-2021-24112GHSA-rxg9-xrhp-64gj

Published

Feb 25, 2021

Updated

Jul 9, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Sep 23, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

3.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

CVE-2021-24112 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 378,567 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

2 pkgs affected

.NETSystem.Drawing.Common.NETSystem.Drawing.Common

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

A remote code execution vulnerability exists when parsing certain types of graphics files. This vulnerability only exists on systems running on MacOS or Linux. This CVE ID is unique from CVE-2021-26701.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
.NETNuGet	`System.Drawing.Common`	≥ 4.0.0&&< 4.7.2	4.7.2`dotnet add package System.Drawing.Common --version 4.7.2`
.NETNuGet	`System.Drawing.Common`	≥ 5.0.0&&< 5.0.3	5.0.3`dotnet add package System.Drawing.Common --version 5.0.3`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for System.Drawing.Common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update System.Drawing.Common to 4.7.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-24112 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2021-24112 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2021-24112. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2021-24112 in your dependencies?

O3 Security finds CVE-2021-24112 across NuGet dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

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