What is CVE-2022-2778?

CVE-2022-2778 is a critical-severity vulnerability in Linux Kernel. CVSS score: 9.8/10. Published 2022-09-30.

How severe is CVE-2022-2778?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Linux Kernel

CVE-2022-2778

In affected versions of Octopus Deploy it is possible to bypass rate limiting on login using null bytes.

Published 2022-09-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001

Affected products

Linux Kernel
Microsoft Windows
Octopus Server
Octopus Deploy Server — versions 3.0, unspecified, 2022.3.348

References

advisories.octopus.com/post/2022/sa2022-15/ (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2022-2778?: CVE-2022-2778 is a critical-severity vulnerability in Linux Kernel. CVSS score: 9.8/10. Published 2022-09-30.
How severe is CVE-2022-2778?: Critical severity. CVSS v3 base score is 9.8 out of 10.