CVE-2021-38585Network attack vector

Unspecified impact via locale-file unserialization

Published Aug 11, 2021 · Updated Aug 4, 2024

Deserialization in WHM Locale Upload in cPanel before 98.0.1 allows remote authenticated users to cause unspecified impact via crafted XML. Public records identify the unsafe operation only as unserialization during locale upload; no parser, function, or object-handling path is disclosed. Exploitation requires authenticated WHM access with permission to use Locale XML Upload, and the published record does not specify the resulting action.

CVSS severity7.2
High
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in WHM Locale Upload in cPanel before 98.0.1 allows remote authenticated users to cause unspecified impact via crafted XML. Public records identify the unsafe operation only as unserialization during locale upload; no parser, function, or object-handling path is disclosed. Exploitation requires authenticated WHM access with permission to use Locale XML Upload, and the published record does not specify the resulting action.

The record

CVE
CVE-2021-38585
Published
Aug 11, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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