How severe is CVE-2022-2778?

CVE-2022-2778 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-2778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-2778?

CVE-2022-2778 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-2778?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-2778 published?

CVE-2022-2778 was published on 2022-09-30 and last updated on 2026-06-17.

CVE-2022-2778

CVE-2022-2778 is a critical-severity vulnerability in Octopus Octopus Server with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Octopus Octopus Server
Published: 2022-09-30
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2022-2778?: In affected versions of Octopus Deploy it is possible to bypass rate limiting on login using null bytes.
How severe is CVE-2022-2778?: CVE-2022-2778 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-2778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-2778?: CVE-2022-2778 affects Octopus Octopus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-2778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-2778 published?: CVE-2022-2778 was published on 2022-09-30 and last updated on 2026-06-17.

References

https://advisories.octopus.com/post/2022/sa2022-15/

Affected products (1)

cpe:2.3:a:octopus:octopus_server:*:*:*:*:*:*:*:*

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