Hickory Project Hickory DNS up to 0.25 Cached Data name resolution

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Hickory Project Hickory DNS up to 0.25 and classified as problematic. Affected by this issue is some unknown functionality of the component Cached Data Handler. This manipulation causes name resolution. This vulnerability is registered as CVE-2026-42254. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Hickory Project Hickory DNS up to 0.25 and classified as problematic. Affected by this vulnerability is an unknown part of the component Cached Data Handler. The manipulation with an unknown input leads to a name resolution vulnerability. The CWE definition for the vulnerability is CWE-706. The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere. As an impact it is known to affect integrity. The summary by CVE is:

Hickory DNS hickory-recursor 0.1 through 0.25.2 allows cross-zone poisoning because cached data is not directly associated with a query that triggered a response.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-42254 since 04/26/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 310351 (Linux Distros Unpatched Vulnerability : CVE-2026-42254), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.26 eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202604-5138) and Tenable (310351). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.8

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.0
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Name resolution
CWE: CWE-706
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 310351
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-42254

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Hickory DNS 0.26

Timelineinfo

04/26/2026 Advisory disclosed
04/26/2026 +0 days CVE reserved
04/26/2026 +0 days VulDB entry created
04/28/2026 +2 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-83hf-93m4-rgwq
Status: Confirmed

CVE: CVE-2026-42254 (🔒)
GCVE (CVE): GCVE-0-2026-42254
GCVE (VulDB): GCVE-100-359635
CNNVD: CNNVD-202604-5138 - Hickory DNS 安全漏洞

Entryinfo

Created: 04/26/2026 09:04
Updated: 04/28/2026 09:04
Changes: 04/26/2026 09:04 (65), 04/26/2026 23:16 (2), 04/27/2026 23:21 (6), 04/28/2026 09:04 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!