How severe is CVE-2022-23278?

CVE-2022-23278 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2022-23278 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23278?

CVE-2022-23278 primarily affects Microsoft Defender For Endpoint Edr Sensor. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-23278?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-23278 published?

CVE-2022-23278 was published on 2022-03-09 and last updated on 2026-06-17.

CVE-2022-23278

CVE-2022-23278 is a medium-severity vulnerability in Microsoft Defender For Endpoint Edr Sensor with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Defender For Endpoint Edr Sensor
Published: 2022-03-09
Last modified: 2026-06-17

Description

Microsoft Defender for Endpoint Spoofing Vulnerability

Frequently asked questions

What is CVE-2022-23278?: Microsoft Defender for Endpoint Spoofing Vulnerability
How severe is CVE-2022-23278?: CVE-2022-23278 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2022-23278 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23278?: CVE-2022-23278 primarily affects Microsoft Defender For Endpoint Edr Sensor. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-23278?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-23278 published?: CVE-2022-23278 was published on 2022-03-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-23278

Affected products (2)

cpe:2.3:a:microsoft:defender_for_endpoint_edr_sensor:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:defender_for_endpoint:-:*:*:*:*:*:*:*