CVE-2021-26914Public exploitNetwork attack vector

Unauthenticated SYSTEM code execution via Java deserialization

Published Feb 8, 2021 · Updated Aug 3, 2024

Java deserialization in NetMotion Mobility before 11.73 and 12.x before 12.02 allows remote attackers to execute code as SYSTEM. The /mobility/Menu/isLoggedOn endpoint passes the attacker-controlled Mvc_x_Form_x_Name parameter to MvcUtil.valueStringToObject, which Base64-decodes, GZIP-inflates, and invokes ObjectInputStream.readObject without validation. No authentication or user interaction is required, but the Mobility web server must be reachable; successful exploitation grants SYSTEM-context code execution.

CVSS severity8.1
High
EPSS probability77.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Java deserialization in NetMotion Mobility before 11.73 and 12.x before 12.02 allows remote attackers to execute code as SYSTEM. The /mobility/Menu/isLoggedOn endpoint passes the attacker-controlled Mvc_x_Form_x_Name parameter to MvcUtil.valueStringToObject, which Base64-decodes, GZIP-inflates, and invokes ObjectInputStream.readObject without validation. No authentication or user interaction is required, but the Mobility web server must be reachable; successful exploitation grants SYSTEM-context code execution.

The record

CVE
CVE-2021-26914
Published
Feb 8, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, CAPEC-586, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-586Object Injection
T1190Exploit Public-Facing Application

Public exploit references

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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