CVE-2020-26101

CRITICAL

In cPanel before 88.0.3, insecure RNDC credentials are used for BIND on a templated VM (SEC-549).

Affects 1 product across 1 vendor.

BCS7.39
CVSS 3.19.8
EPSS1.4%
Percentile70th
PatchPatched
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-287: Improper Authentication

Software does not prove or insufficiently proves that the user is who they claim to be.

Related Attack Patterns (CAPEC)
CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
via CWE-287
CAPEC-633 Token Impersonation
via CWE-287
CAPEC-650 Upload a Web Shell to a Web Server
via CWE-287
CAPEC-194 Fake the Source of Data
via CWE-287
CAPEC-593 Session Hijacking
via CWE-287
Show all 10

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ SAGE Intelligence — CITED Relevance Research Team

cPanel versions prior to 88.0.3 use insecure RNDC credentials for BIND on templated VMs, which could allow unauthorized access to DNS management.

BSID: BS-2020-GLOBAL-149266-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2020-26101?
cPanel versions prior to 88.0.3 use insecure RNDC credentials for BIND on templated VMs, which could allow unauthorized access to DNS management.
What is the CVSS score for CVE-2020-26101?
CVE-2020-26101 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 1.4%.
Is CVE-2020-26101 actively exploited?
No confirmed active exploitation of CVE-2020-26101 as of 2026-05-30.
How do I remediate CVE-2020-26101?
Priority: IMMEDIATE. Advisory: https://docs.cpanel.net/changelogs/88-change-log/ PSIRT: [email protected]
What systems are affected by CVE-2020-26101?
CVE-2020-26101 affects: Cpanel.
Vulnerability Details
CVE IDCVE-2020-26101
BSIDBS-2020-GLOBAL-149266-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2020-09-25
Last Modified2024-11-21
ICS Relevance15%
Weakness (CWE)
SourceNVD
Official Description

In cPanel before 88.0.3, insecure RNDC credentials are used for BIND on a templated VM (SEC-549).

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker with network access to the affected cPanel server could exploit this vulnerability to gain unauthorized control over the BIND DNS server by using the insecure RNDC credentials.

Exploitation Likelihood: HIGH

Affected Products
VendorProductFixed Version
Cpanel Cpanel
Remediation
View Vendor Advisory →

Remediation Priority: IMMEDIATE

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: July 2026 | Threat Age: 2129 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hashdfbea804ff8ceca9b9d55130524cc2f7493f08500b592493dba6c6be227c595446cc0ff2e37f26ccf9eaeeae98097750282e6c485fb582e8d15301d32a95fea1
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