CVE-2021-26915Public exploitNetwork attack vector

SYSTEM code execution via unsafe 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 webrepdb StatusServlet sends attacker-controlled GET or POST request bodies to ObjectInputStream.readObject without restricting the objects being deserialized. Exposure of the Mobility web server to an untrusted network is required, but no authentication or user interaction is needed; successful exploitation gives full server-level code execution.

CVSS severity8.1
High
EPSS probability41.84%
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 webrepdb StatusServlet sends attacker-controlled GET or POST request bodies to ObjectInputStream.readObject without restricting the objects being deserialized. Exposure of the Mobility web server to an untrusted network is required, but no authentication or user interaction is needed; successful exploitation gives full server-level code execution.

The record

CVE
CVE-2021-26915
Published
Feb 8, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, 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

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