VDB
DEBIAN-CVE-2021-45100
DEBIAN-CVE-2021-45100
PUBLISHED
CVSS 7.5 HIGH
Record from OSV · Published December 16, 2021
The ksmbd server through 3.4.2, as used in the Linux kernel through 5.15.8, sometimes communicates in cleartext even though encryption has been enabled. This occurs because it sets the SMB2_GLOBAL_CAP_ENCRYPTION flag when using the SMB 3.1.1 protocol, which is a violation of the SMB protocol specification. When Windows 10 detects this protocol violation, it disables encryption.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux | Debian:14 | 5.15.15-1 |
| linux | Debian:13 | 5.15.15-1 |
| linux | Debian:12 | 5.15.15-1 |
Risk scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | linux | 0 |
| Debian:13 | linux | 0 |
| Debian:12 | linux | 0 |
Timeline
- Dec 16, 2021 CVE Published
- Oct 23, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln DEBIAN-CVE-2021-45100
vulnetix vdb fixes DEBIAN-CVE-2021-45100Or 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/DEBIAN-CVE-2021-45100/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart