CVE-2021-44682Network attack vector

Remote code execution via untrusted deserialization

Published Dec 6, 2021 · Updated Aug 4, 2024

Untrusted deserialization in Veritas Enterprise Vault through 14.1.2 allows remote attackers to execute code via .NET Remoting. EVStorageQueueBroker.exe accepts user-supplied .NET Remoting data without proper validation and deserializes it in the Enterprise Vault Storage Service context. Remote reachability requires RDP access to a network VM, knowledge of server details and an improperly configured server firewall.

CVSS severity9.8
Critical
EPSS probability1.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Untrusted deserialization in Veritas Enterprise Vault through 14.1.2 allows remote attackers to execute code via .NET Remoting. EVStorageQueueBroker.exe accepts user-supplied .NET Remoting data without proper validation and deserializes it in the Enterprise Vault Storage Service context. Remote reachability requires RDP access to a network VM, knowledge of server details and an improperly configured server firewall.

The record

CVE
CVE-2021-44682
Published
Dec 6, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 6, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
9.8VeritasCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8Zero Day InitiativeCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1210Exploitation of Remote Services

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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