How severe is CVE-2022-3787?

CVE-2022-3787 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-3787 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-3787?

CVE-2022-3787 primarily affects Redhat Device-mapper-multipath. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-3787?

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

When was CVE-2022-3787 published?

CVE-2022-3787 was published on 2023-03-29 and last updated on 2026-06-17.

CVE-2022-3787

CVE-2022-3787 is a high-severity vulnerability in Redhat Device-mapper-multipath with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
Affected product: Redhat Device-mapper-multipath
Published: 2023-03-29
Last modified: 2026-06-17

Description

A vulnerability was found in the device-mapper-multipath. The device-mapper-multipath allows local users to obtain root access, exploited alone or in conjunction with CVE-2022-41973. Local users that are able to write to UNIX domain sockets can bypass access controls and manipulate the multipath setup. This issue occurs because an attacker can repeat a keyword, which is mishandled when arithmetic ADD is used instead of bitwise OR. This could lead to local privilege escalation to root.

Frequently asked questions

What is CVE-2022-3787?: A vulnerability was found in the device-mapper-multipath. The device-mapper-multipath allows local users to obtain root access, exploited alone or in conjunction with CVE-2022-41973. Local users that are able to write to UNIX domain sockets can bypass access controls and manipulate the multipath setup. This issue occurs because an attacker can repeat a keyword, which is mishandled when arithmetic ADD is used instead of bitwise OR. This could lead to local privilege escalation to root.
How severe is CVE-2022-3787?: CVE-2022-3787 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-3787 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-3787?: CVE-2022-3787 primarily affects Redhat Device-mapper-multipath. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-3787?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-3787 published?: CVE-2022-3787 was published on 2023-03-29 and last updated on 2026-06-17.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2138959

Affected products (3)

cpe:2.3:a:redhat:device-mapper-multipath:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.7:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.1:*:*:*:*:*:*:*

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