PowerDNS Recursor up to 5.2.10/5.3.7/5.4.2 denial of service
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.7 | $0-$5k | 0.00 |
Summary
A vulnerability, which was classified as problematic, was found in PowerDNS Recursor up to 5.2.10/5.3.7/5.4.2. Affected by this issue is some unknown functionality. Executing a manipulation can lead to denial of service. This vulnerability appears as CVE-2026-42388. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.
Details
A vulnerability was found in PowerDNS Recursor up to 5.2.10/5.3.7/5.4.2. It has been declared as problematic. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:
Incomplete validation of the SOA record present in a catalog zone might lead to a crash.
The weakness was presented by ylwango613. The advisory is available at docs.powerdns.com. This vulnerability was named CVE-2026-42388 since 04/27/2026. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.
Upgrading to version 5.2.11, 5.3.8 or 5.4.3 eliminates this vulnerability.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Product
Type
Vendor
Name
Version
- 5.2.0
- 5.2.1
- 5.2.2
- 5.2.3
- 5.2.4
- 5.2.5
- 5.2.6
- 5.2.7
- 5.2.8
- 5.2.9
- 5.2.10
- 5.3.0
- 5.3.1
- 5.3.2
- 5.3.3
- 5.3.4
- 5.3.5
- 5.3.6
- 5.3.7
- 5.4.0
- 5.4.1
- 5.4.2
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.8VulDB Meta Temp Score: 4.7
VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍
CNA Base Score: 5.9
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Denial of serviceCWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔒
Upgrade: Recursor 5.2.11/5.3.8/5.4.3
Timeline
04/27/2026 CVE reserved06/25/2026 Advisory disclosed
06/25/2026 VulDB entry created
06/25/2026 VulDB entry last update
Sources
Advisory: docs.powerdns.comResearcher: ylwango613
Status: Confirmed
CVE: CVE-2026-42388 (🔒)
GCVE (CVE): GCVE-0-2026-42388
GCVE (VulDB): GCVE-100-373858
Entry
Created: 06/25/2026 16:42Changes: 06/25/2026 16:42 (64)
Complete: 🔍
Cache ID: 216::103
If you want to get best quality of vulnerability data, you may have to visit VulDB.
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