CVE-2025-55113Network attack vector

Authentication bypass via NULL-truncated certificate email

Published Sep 16, 2025 · Updated Sep 16, 2025

Authentication bypass in BMC Control-M/Agent 9.0.18 through 9.0.22.000 allows remote attackers to bypass ACLs via a crafted certificate. The C router compares the email address from the client certificate only through the first NULL byte, so a crafted value passes an ACL check. Reachability requires TLS, an enabled email-address ACL, and the C router; JAVA_AR=N selects it on 9.0.21 and later.

CVSS severity9.5
Critical
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in BMC Control-M/Agent 9.0.18 through 9.0.22.000 allows remote attackers to bypass ACLs via a crafted certificate. The C router compares the email address from the client certificate only through the first NULL byte, so a crafted value passes an ACL check. Reachability requires TLS, an enabled email-address ACL, and the C router; JAVA_AR=N selects it on 9.0.21 and later.

The record

CVE
CVE-2025-55113
Published
Sep 16, 2025
Updated
Sep 16, 2025
Vendor
BMC Software, Inc.
Product
Control-M/Agent
Classifications
CWE-158, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.0.18
  2. Affected versionversion=9.0.19
  3. Affected versionversion=9.0.20
  4. Affected versionversion=9.0.21
  5. Affected versionversion=9.0.22.000

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BMC Software, Inc. · Control-M/Agentversion=9.0.18; version=9.0.19; version=9.0.20; version=9.0.21; version=9.0.22.000

Published CVSS scores

9.0AirbusCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.5AirbusCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X
10.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-158Improper Neutralization of Null Byte or NUL Character
T1190Exploit Public-Facing Application

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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