No exploitation reportedFix available

CVE-2016-10858

Q: Is CVE-2016-10858 actively exploited?

Active exploitation of CVE-2016-10858 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2016-10858?

CVE-2016-10858 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2019-08-01
Fixed in11.52.1.1 · 11.52.0.23 · 11.50.3.1 · 11.48.4.8
WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

cPanel before 11.54.0.0 allows unauthenticated arbitrary code execution via DNS NS entry poisoning (SEC-64).

Timeline

dates in UTC

2019-08-0115:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-10858?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-10858?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

cPanel

Branch	Affected	Fixed in	Source
11.52	≥ 11.52.1.0, < 11.52.1.1	11.52.1.1	NVD
11.x	≥ 11.51.9999.98, < 11.52.0.23	11.52.0.23	NVD
11.50	≥ 11.50.0.4, < 11.50.3.1	11.50.3.1	NVD
11.48	≥ 11.48.0.5, < 11.48.4.8	11.48.4.8	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update cPanel to 11.52.1.1 · 11.52.0.23 · 11.50.3.1 · 11.48.4.8

Advisories and patches

documentation.cpanel.netRelease Notes
forums.cpanel.netVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.09.8read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
NVDweakness (CWE)CWE-20read 2026-10-23
FIRST EPSSEPSS score2.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2019-08-01
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-10858?

cPanel before 11.54.0.0 allows unauthenticated arbitrary code execution via DNS NS entry poisoning (SEC-64).

Is CVE-2016-10858 actively exploited?

Active exploitation of CVE-2016-10858 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-10858?

CVE-2016-10858 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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