How severe is CVE-2020-26101?

CVE-2020-26101 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-26101 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26101?

CVE-2020-26101 affects Cpanel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26101?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-26101 published?

CVE-2020-26101 was published on 2020-09-25 and last updated on 2026-06-17.

CVE-2020-26101

CVE-2020-26101 is a critical-severity vulnerability in Cpanel with a CVSS 3.x base score of 9.8. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Cpanel
Published: 2020-09-25
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2020-26101?: In cPanel before 88.0.3, insecure RNDC credentials are used for BIND on a templated VM (SEC-549).
How severe is CVE-2020-26101?: CVE-2020-26101 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-26101 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26101?: CVE-2020-26101 affects Cpanel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26101?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-26101 published?: CVE-2020-26101 was published on 2020-09-25 and last updated on 2026-06-17.

References

https://docs.cpanel.net/changelogs/88-change-log/

Affected products (1)

cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*

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All CVEs affecting Cpanel →

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-94493 — Critical (CVSS 10.0): A vulnerability was detected in Gigatech PDV5701 1.0.31_240305_112640. This issue affects some unknown processing of…
CVE-2026-83099 — Critical (CVSS 10.0): Vulnerability in the Oracle Forms product of Oracle Fusion Middleware (component: Forms Services, C/S, Charmode).…
CVE-2026-83059 — Critical (CVSS 10.0): Vulnerability in the Oracle Internet Directory product of Oracle Fusion Middleware (component: OID LDAP Server).…

Browse all CWE-287 (Improper Authentication) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

18.228.228.159 (ipv4-addr)
3.19.213.118 (ipv4-addr)
51.17.154.141 (ipv4-addr)
56.155.73.159 (ipv4-addr)
13.206.73.237 (ipv4-addr)