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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2020-9715

HIGH

CVE-2020-9715 is a high-severity (CVSS 7.8) Use After Free vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2026-04-13) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

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…

Published
Updated
Affected
2 products
Patched
See advisory
Exploits
3 known
Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2026-04-13. Federal agencies were required to remediate by 2026-04-27.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2020-9715.

EPSS Exploitation Probability

via FIRST.org ↗
33.5%probability of exploitation in next 30 days
Moderate Risk-15.10%
Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk
20.7%43.5%66.2%89.0%50.4%33.5%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2020-9715 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

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 .

Affected Products

2 products · 8 configurations
Application
acrobat dcadobe
≥ 17.011.30059 && ≤ 17.011.30171
1 version
20.001.30002
Application
acrobat reader dcadobe
≥ 17.011.30059 && ≤ 17.011.30171
1 version
20.001.30002
Exploits & PoCs
3

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.3…

github.comGithubJan 2022

Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.3…

blog.exodusintel.comNVDFeb 2023

Detection & mitigation playbook

Vulnerability

  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2020-9715 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Frequently Asked Questions

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 .
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Actively Exploited: CVE-2020-9715: Use After Free (High 7.8)