Adobe Acrobat Reader 2017.009.20058 and earlier, 2017.008.30051 and earlier, 2015.006.30306 and earlier, and 11.0.20 and earlier has an exploitable use after free vulnerability when generating content using XFA layout engine. Successful exploitation could lead to arbitrary code execution.
CVE-2017-11256
HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence
Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 8.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 8%CVSS: 8.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.8
- EG Score
- 8.8(medium)
- EPSS
- 93.8%
- KEV
- Not listed
Published
August 11, 2017
Last Modified
May 13, 2026
References (6)
- psirt@adobehttp://www.securityfocus.com/bid/100182
- psirt@adobehttp://www.securitytracker.com/id/1039098
- psirt@adobehttps://helpx.adobe.com/security/products/acrobat/apsb17-24.html
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/100182
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039098
- af854a3a-2127-422b-91ae-364da2661108https://helpx.adobe.com/security/products/acrobat/apsb17-24.html
Frequently asked(5)
What is CVE-2017-11256?
CVE-2017-11256 is a high vulnerability published on August 11, 2017. Adobe Acrobat Reader 2017.009.20058 and earlier, 2017.008.30051 and earlier, 2015.006.30306 and earlier, and 11.0.20 and earlier has an exploitable use after free vulnerability when generating content using XFA layout engine. Successful exploitation could lead to arbitrary code execution.
When was CVE-2017-11256 disclosed?
CVE-2017-11256 was first published in the National Vulnerability Database on August 11, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-11256 actively exploited?
CVE-2017-11256 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-11256?
CVE-2017-11256 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2017-11256?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-11256, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2017-11256
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