VDB
CVE-2021-40455
CVE-2021-40455
PUBLISHED
CVSS 5.5 MEDIUM
Windows Installer Spoofing Vulnerability
Reported by microsoft · Published October 13, 2021
Windows Installer Spoofing Vulnerability
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| Windows 10 Version 2004 | Microsoft | 10.0.19041.1288 |
| Windows 7 | Microsoft | 6.1.7601.25740 |
| Windows Server version 2004 | Microsoft | 10.0.19041.1288 |
| Windows 11 version 21H2 | Microsoft | 10.0.22000.258 |
| Windows Server 2016 (Server Core installation) | Microsoft | 10.0.14393.4704 |
| Windows Server 2012 R2 (Server Core installation) | Microsoft | 6.3.9600.20144 |
| Windows 10 Version 1809 | Microsoft | 10.0.17763.2237 |
| Windows 10 Version 1909 | Microsoft | 10.0.18363.1854 |
| Windows Server 2008 R2 Service Pack 1 | Microsoft | 6.1.7601.25740 |
| Windows Server 2012 (Server Core installation) | Microsoft | 6.2.9200.23490 |
| Windows Server 2008 R2 Service Pack 1 (Server Core installation) | Microsoft | 6.1.7601.25740 |
| Windows 10 Version 20H2 | Microsoft | 10.0.19042.1288, 10.0.19041.1288 |
15 more packages have a fixed version. See every fix in Lookup.
Risk scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.0 |
| Microsoft | Windows Server 2019 | 10.0.0 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.0 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 |
| Microsoft | Windows Server 2022 | 10.0.0 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 |
| Microsoft | Windows Server version 2004 | 10.0.0 |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 |
| Microsoft | Windows Server version 20H2 | 10.0.0 |
| Microsoft | Windows 11 version 21H2 | 10.0.0 |
| Microsoft | Windows 10 Version 1507 | 10.0.0 |
| Microsoft | Windows 10 Version 1607 | 10.0.0 |
| Microsoft | Windows Server 2016 | 10.0.0 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.0 |
| Microsoft | Windows 7 | 6.1.0 |
| Microsoft | Windows 7 Service Pack 1 | 6.1.0 |
| Microsoft | Windows 8.1 | 6.3.0 |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.0 |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.0 |
…and 34 more
Timeline
- Oct 13, 2021 CVE Published
- Oct 13, 2021 EPSS Score (30 in total, the first dated here)
- Jun 14, 2023 PoC Published (4 in total, the first dated here)
- Aug 4, 2024 CVE Updated
- Mar 10, 2026 Security Advisory (4 in total, the first dated here)
- Jul 22, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-40455
vulnetix vdb fixes CVE-2021-40455Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2021-40455/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart