Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2020-8927

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

CVSS v3:

  • Severity: Medium
  • Score: 5.3
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v2:

  • Severity: Medium
  • Score: 6.4
  • AV:N/AC:L/Au:N/C:N/I:P/A:P
Software From Fixed in
google / brotli - 1.0.8
debian / debian_linux 9.0 9.0.x
debian / debian_linux 10.0 10.0.x
fedoraproject / fedora 31 31.x
fedoraproject / fedora 32 32.x
fedoraproject / fedora 33 33.x
fedoraproject / fedora 34 34.x
fedoraproject / fedora 35 35.x
fedoraproject / fedora 36 36.x
canonical / ubuntu_linux 18.04 18.04.x
canonical / ubuntu_linux 20.04 20.04.x
canonical / ubuntu_linux 16.04 16.04.x
opensuse / leap 15.2 15.2.x
microsoft / visual_studio_2019 16.0 16.11.x
microsoft / .net 5.0 5.0.14.x
microsoft / .net_core 3.1 3.1.22.x
microsoft / powershell 7.2 7.2.2
microsoft / powershell 7.0 7.0.9
microsoft / visual_studio_2022 17.1 17.1.x
microsoft / powershell 7.1 7.1.6
microsoft / visual_studio_2022 17.0 17.0.7.x
Rust icon compu-brotli-sys - 1.0.9
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-arm 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-arm64 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-musl-arm64 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-x64 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.osx-x64 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-arm 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-arm64 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-x64 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-x86 3.0.0 3.1.23
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-arm 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-arm64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.osx-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.browser-wasm 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-arm 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-arm64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-musl-arm 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-musl-arm64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-musl-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.osx-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-arm 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-arm64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-x64 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-x86 5.0.0 5.0.15
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.android-x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.browser-wasm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.android-x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.browser-wasm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.ios-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.iossimulator-x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.maccatalyst-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.maccatalyst-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvos-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvossimulator-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.osx-x64.Cross.tvossimulator-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-arm64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.android-x86.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.browser-wasm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.AOT.win-x64.Cross.browser-wasm.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.linux-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.AOT.osx-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.linux-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.LLVM.osx-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-arm64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x86.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x86.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.android-x86.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.browser-wasm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.browser-wasm.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.ios-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.ios-arm.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.ios-arm.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.ios-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.ios-arm64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-arm64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.iossimulator-x86.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-musl-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.linux-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-arm64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.maccatalyst-x64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.osx-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.osx-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvos-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvos-arm64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-arm64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.tvossimulator-x64.Msi.x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.win-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.Mono.win-x86 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-musl-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-musl-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-musl-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.linux-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.osx-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.osx-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-arm 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-arm64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-x64 6.0.0 6.0.3
.NET NuGet icon Microsoft.NETCore.App.Runtime.win-x86 6.0.0 6.0.3

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.