CVE-2022-42326

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 22.0% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-11-01 00:00Z3 YR AGO

Last updated

2025-05-05 15:07Z1 YR AGO

Reserved

2022-10-03

Assigning CNA

XEN

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

• CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.1

Document digest

3e9a5b121775c9aca8839ac60dd9a0ad0840b0a61f6958a5be407e5c73776ed2

• xenbits.xenproject.orghttps://xenbits.xenproject.org/xsa/advisory-421.txt
• xenbits.xen.orghttp://xenbits.xen.org/xsa/advisory-421.html
• www.openwall.com[oss-security] 20221101 Xen Security Advisory 421 v2 (CVE-2022-42325,CVE-2022-42326) - Xenstore: Guests can create arbitrary number of nodes via transactionshttp://www.openwall.com/lists/oss-security/2022/11/01/11mailing-list
• www.debian.orgDSA-5272https://www.debian.org/security/2022/dsa-5272vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-07438e12dfhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-99af00f60ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/vendor-advisory
• lists.fedoraproject.orgFEDORA-2022-9f51d13fa3https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/vendor-advisory
• security.gentoo.orgGLSA-202402-07https://security.gentoo.org/glsa/202402-07vendor-advisory