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CVE-2018-4878: Adobe Flash Player Use-After-Free Vulnerability

criticalknown exploitedpublic exploitCVE-2018-4878
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Adobe Flash Player contains a use-after-free vulnerability that could allow for code execution.

CSIRTS triage

vendor: Adobeproduct: Flash PlayerRemote code execution
What
A use-after-free vulnerability could allow for code execution.
Who is affected
Users of Adobe Flash Player.
Urgency
Immediate action is required due to active exploitation and critical severity.
Action
Update Adobe Flash Player to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-4878

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-4878coverage & exploitation statusNVD · CVE.org

Recent advisories for Adobe Flash Player

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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