CVE-2023-26437
MEDIUMCVSS 5.3/10EPSS 0.59%
Last modified
CVE-2023-26437 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.
Description
Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Recursor | < 4.6.6 |
| Powerdns | Recursor | >= 4.7.0, < 4.7.5 |
| Powerdns | Recursor | >= 4.8.0, < 4.8.4 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-26437?
Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
How severe is CVE-2023-26437?
CVE-2023-26437 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.
How do I fix CVE-2023-26437?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2023
- CVE-2023-26431IPv4-mapped IPv6 addresses did not get recognized as "local"…4.3
- CVE-2023-26432When adding an external mail account, processing of SMTP "ca…4.3
- CVE-2023-26433When adding an external mail account, processing of IMAP "ca…4.3
- CVE-2023-26434When adding an external mail account, processing of POP3 "ca…4.3
- CVE-2023-26435It was possible to call filesystem and network references us…5
- CVE-2023-26436Attackers with access to the "documentconverterws" API were …8.8
- CVE-2023-26438External service lookups for a number of protocols were vuln…3.1
- CVE-2023-26439The cacheservice API could be abused to inject parameters wi…7.8
- CVE-2023-2644A vulnerability, which was classified as problematic, has be…7.8
- CVE-2023-26440The cacheservice API could be abused to indirectly inject pa…7.8
- CVE-2023-26441Cacheservice did not correctly check if relative cache objec…5.5
- CVE-2023-26442In case Cacheservice was configured to use a sproxyd object-…3.2
Are you affected by CVE-2023-26437?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST