CVE-2021-37146Network attack vector

Remote service hang via misplaced XML name

Published Sep 28, 2021 · Updated Aug 4, 2024

Denial of service in Open Robotics ros_comm 1.14.11 and earlier and 1.15.0 through 1.15.11 allows remote attackers to hang roscore. The XMLRPC structFromXml parser searches beyond the current member for a misplaced name element, and recursive array and struct parsing then loops on malformed XML. The attacker must reach the roscore XMLRPC service; repeated malformed requests monopolize processing, with no reported data access or modification.

CVSS severity7.5
High
EPSS probability2.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Open Robotics ros_comm 1.14.11 and earlier and 1.15.0 through 1.15.11 allows remote attackers to hang roscore. The XMLRPC structFromXml parser searches beyond the current member for a misplaced name element, and recursive array and struct parsing then loops on malformed XML. The attacker must reach the roscore XMLRPC service; repeated malformed requests monopolize processing, with no reported data access or modification.

The record

CVE
CVE-2021-37146
Published
Sep 28, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-835, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 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

7.5UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499.004Application or System Exploitation

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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