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CVE-2022-33993

19
FAUCET Score

CVE-2022-33993 describes a cache poisoning vulnerability in Domain Name Relay Daemon (DNRD) version 2.20.3, stemming from its misinterpretation of special characters in domain names. This flaw allows an attacker to inject malicious DNS records into the cache, affecting the domain_name_relay_daemon_project. With a CVSS score of 5.3 (Medium), this vulnerability is network-exploitable with low attack complexity, requiring no privileges or user interaction, and primarily impacts data integrity (I:L). Currently, there is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.20.3CPE matchmatch criteria
cpe:2.3:a:domain_name_relay_daemon_project:domain_name_relay_daemon:2.20.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 32nd percentile among its peer group of 23,725 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

dnrd.sourceforge.net
ProductThird Party Advisory
openwall.com / lists/oss-security/2022/08/14/1
Mailing ListThird Party Advisory
usenix.org / conference/usenixsecurity21/presentation/jeitner
Third Party Advisory
usenix.org / conference/usenixsecurity22/presentation/jeitner
Third Party Advisory