An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535 bytes, potentially leading to a crash resulting in denial of service.
Metrics
Affected Vendors & Products
References
History
Wed, 01 Apr 2026 02:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Powerdns
Powerdns dnsdist |
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| Vendors & Products |
Powerdns
Powerdns dnsdist |
Tue, 31 Mar 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-787 | |
| Metrics |
ssvc
|
Tue, 31 Mar 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535 bytes, potentially leading to a crash resulting in denial of service. | |
| Title | Out-of-bounds write when rewriting large DNS packets | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: OX
Published: 2026-03-31T12:04:23.419Z
Updated: 2026-03-31T13:17:25.025Z
Reserved: 2026-02-24T08:46:09.373Z
Link: CVE-2026-27853
Updated: 2026-03-31T13:13:57.021Z
Status : Received
Published: 2026-03-31T12:16:27.917
Modified: 2026-03-31T14:16:10.933
Link: CVE-2026-27853
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