CVE-2022-48256
CVE-2022-48256 is a high-severity vulnerability in Technitium Dns Server with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-835
- Affected product: Technitium Dns Server
- Published:
- Last modified:
Description
Technitium DNS Server before 10.0 allows a self-CNAME denial-of-service attack in which a CNAME loop causes an answer to contain hundreds of records.
Frequently asked questions
- What is CVE-2022-48256?
- Technitium DNS Server before 10.0 allows a self-CNAME denial-of-service attack in which a CNAME loop causes an answer to contain hundreds of records.
- How severe is CVE-2022-48256?
- CVE-2022-48256 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2022-48256 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-48256?
- CVE-2022-48256 affects Technitium Dns Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2022-48256?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2022-48256 published?
- CVE-2022-48256 was published on 2023-01-13 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:technitium:dns_server:*:*:*:*:*:*:*:*
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