CVE-2022-2795

MEDIUMNVD 5.37.5▲

5.3

By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

CVSS v3: 5.3
EG Score: 7.5(medium)
EPSS: 65.6%
KEV: Not listed

Published

September 21, 2022

Last Modified

November 29, 2024

References (17)

security-officer@ischttp://www.openwall.com/lists/oss-security/2022/09/21/3
security-officer@ischttps://kb.isc.org/docs/cve-2022-2795
security-officer@ischttps://lists.debian.org/debian-lts-announce/2022/10/msg00007.html
security-officer@ischttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4GQWBPF7Y52J2FA24U6UMHQAOXZEF7/
security-officer@ischttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT/
security-officer@ischttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZJQNUASODNVAWZV6STKG5SD6XIJ446S/
security-officer@ischttps://security.gentoo.org/glsa/202210-25
security-officer@ischttps://www.debian.org/security/2022/dsa-5235
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2022/09/21/3
af854a3a-2127-422b-91ae-364da2661108https://kb.isc.org/docs/cve-2022-2795
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/10/msg00007.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4GQWBPF7Y52J2FA24U6UMHQAOXZEF7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZJQNUASODNVAWZV6STKG5SD6XIJ446S/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202210-25

Patch Availability(7)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libisc169 (1:9.11.3+dfsg-1ubuntu1.18) @ bionic	2026-05-25	ubuntu
ubuntu	lwresd (1:9.10.3.dfsg.P4-8ubuntu1.19+esm3) @ xenial	2026-05-25	ubuntu
redhat	dhcp-12:4.3.6-47.el8_6.2	2024-05-07	redhat
redhat	bind9.16-32:9.16.23-0.14.el8	2023-05-16	redhat
redhat	bind-32:9.11.36-8.el8	2023-05-16	redhat
redhat	bind-32:9.16.23-11.el9	2023-05-09	redhat
redhat	bind-32:9.11.4-26.P2.el7_9.13	2023-01-24	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-400Uncontrolled Resource Consumption (Denial of Service)

All Vendor Advisories

(8)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch

Frequently asked(5)

What is CVE-2022-2795?

CVE-2022-2795 is a medium vulnerability published on September 21, 2022. By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

When was CVE-2022-2795 disclosed?

CVE-2022-2795 was first published in the National Vulnerability Database on September 21, 2022, with the most recent update on November 29, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-2795 actively exploited?

CVE-2022-2795 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-2795?

CVE-2022-2795 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5.

How do I remediate CVE-2022-2795?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-2795, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-2795

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CVE-2022-2795

Published

Last Modified

References (17)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-2795?

Same vendor

Same CWE

CVE-2022-2795

📅 Published

🔄 Last Modified

🔗 References (17)

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-2795?

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Published

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References (17)

Frequently asked(5)

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