CVE-2022-33990

HIGHNVD 7.57.5—

7.5

Misinterpretation of special domain name characters in dproxy-nexgen (aka dproxy nexgen) leads to cache poisoning because domain names and their associated IP addresses are cached in their misinterpreted form.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 53.7%
KEV: Not listed

Published

August 15, 2022

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://sourceforge.net/projects/dproxy/
cve@mitrehttps://www.openwall.com/lists/oss-security/2022/08/14/3
cve@mitrehttps://www.usenix.org/conference/usenixsecurity21/presentation/jeitner
cve@mitrehttps://www.usenix.org/conference/usenixsecurity22/presentation/jeitner
af854a3a-2127-422b-91ae-364da2661108https://sourceforge.net/projects/dproxy/
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2022/08/14/3
af854a3a-2127-422b-91ae-364da2661108https://www.usenix.org/conference/usenixsecurity21/presentation/jeitner
af854a3a-2127-422b-91ae-364da2661108https://www.usenix.org/conference/usenixsecurity22/presentation/jeitner

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore

Frequently asked(5)

What is CVE-2022-33990?

CVE-2022-33990 is a high vulnerability published on August 15, 2022. Misinterpretation of special domain name characters in dproxy-nexgen (aka dproxy nexgen) leads to cache poisoning because domain names and their associated IP addresses are cached in their misinterpreted form.

When was CVE-2022-33990 disclosed?

CVE-2022-33990 was first published in the National Vulnerability Database on August 15, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-33990 actively exploited?

CVE-2022-33990 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-33990?

CVE-2022-33990 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2022-33990?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-33990, 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.

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CVE-2022-33990

📅 Published

🔄 Last Modified

🔗 References (8)