Adobe Flash Player Use-After-Free Vulnerability
A use-after-free vulnerability was discovered in Adobe Flash Player before 28.0.0.161. This vulnerability occurs due to a dangling pointer in the Primetime SDK related to media player handling of listener objects. A successful attack can…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)03 Nov 2021
- Exploited in EUVD (ENISA)03 Nov 2021
- Used by ransomwareyes
- EPSS above 10 %90.3%
- No account, over the networkno
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: The impacted product is end-of-life and should be disconnected if still in use.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
A use-after-free vulnerability was discovered in Adobe Flash Player before 28.0.0.161. This vulnerability occurs due to a dangling pointer in the Primetime SDK related to media player handling of listener objects. A successful attack can lead to arbitrary code execution. This was exploited in the wild in January and February 2018.
Affected products
- Adobe Flash Player before 28.0.0.161
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
-
Published
-
Exploitation reported (ENISA)
-
Added to the KEV catalog
-
CISA remediation due date
-
EPSS peak: 90.3%
References
- cve.org · CVE-2018-4878
- ENISA EUVD · EUVD-2018-16663
- CISA KEV
- FIRST EPSS
- blog.talosintelligence.com
- threatpost.com
- helpx.adobe.com
- access.redhat.com
- securitytracker.com
- securityfocus.com
- fireeye.com
- blog.morphisec.com
- darkreading.com
- github.com
- trendmicro.com
- github.com
- securingtomorrow.mcafee.com
- exploit-db.com
Other exploited vulnerabilities from the same vendor
- CVE-2026-48356Adobe Commerce and Magento Unrestricted Upload of File with Dangerous Type Vulnerability7.5 · Rising fast
- CVE-2026-71362Adobe Commerce and Magento Incorrect Authorization Vulnerability8.8 · Actively exploited
- CVE-2026-75650Adobe Commerce and Magento Improper Neutralization of Special Elements Used in a Template Engine Vulnerability5.9 · Actively exploited
- CVE-2026-48282Adobe ColdFusion Path Traversal Vulnerability7.7 · Actively exploited
- CVE-2009-3459Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability8.5 · Actively exploited
- CVE-2026-34621Adobe Acrobat and Reader Prototype Pollution Vulnerability4.9 · Background exploitation