Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2018-4878

CVE-2018-4878HIGH

n/a Adobe Flash Player before 28.0.0.161 — Adobe Flash Player

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  H  H  H    7.8   .8953   99.8   YES

AFFECTED
  Product                               Versions                                Fixed
  Adobe Flash Player before 28.0.0.161  Adobe Flash Player before 28.0.0.161 –  —

TIMELINE
  Jan 3   Reserved by adobe
  Feb 6   Published (CNA: adobe)
  Nov 3   Added to CISA KEV, remediation due 2022-05-03

CWE-416 · CNA: adobe · CVSS v3.1 · 16 references · KEV due May 3, 2022

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
January 3, 2018	Reserved	Reserved by adobe
February 6, 2018	Published	Published (CNA: adobe)
November 3, 2021	KEV ADDED	Added to CISA KEV, remediation due 2022-05-03

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	Adobe Flash Player before 28.0.0.161	—	Adobe Flash Player before 28.0.0.161	—

Weaknesses

CWE-416

References (16)

http://blog.talosintelligence.com/2018/02/group-123-goes-wild.html [x_refsource_MISC]
http://www.securityfocus.com/bid/102893 [vdb-entry, x_refsource_BID]
http://www.securitytracker.com/id/1040318 [vdb-entry, x_refsource_SECTRACK]
https://access.redhat.com/errata/RHSA-2018:0285 [vendor-advisory, x_refsource_REDHAT]
https://blog.morphisec.com/flash-exploit-cve-2018-4878-spotted-in-the-wild-massive-malspam-campaign [x_refsource_MISC]
https://github.com/InQuest/malware-samples/tree/master/CVE-2018-4878-Adobe-Flash-DRM-UAF-0day [x_refsource_MISC]
https://github.com/cisagov/vulnrichment/issues/196 [issue-tracking]
https://github.com/vysec/CVE-2018-4878 [x_refsource_MISC]
https://helpx.adobe.com/security/products/flash-player/apsb18-03.html [x_refsource_MISC]
https://securingtomorrow.mcafee.com/mcafee-labs/hackers-bypassed-adobe-flash-protection-mechanism/ [x_refsource_MISC]
https://threatpost.com/adobe-flash-player-zero-day-spotted-in-the-wild/129742/ [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4878 [government-resource]
https://www.darkreading.com/threat-intelligence/adobe-flash-vulnerability-reappears-in-malicious-word-files/d/d-id/1331139 [x_refsource_MISC]
https://www.exploit-db.com/exploits/44412/ [exploit, x_refsource_EXPLOIT-DB]
https://www.fireeye.com/blog/threat-research/2018/02/attacks-leveraging-adobe-zero-day.html [x_refsource_MISC]
https://www.trendmicro.com/vinfo/us/security/news/vulnerabilities-and-exploits/north-korean-hackers-allegedly-exploit-adobe-flash-player-vulnerability-cve-2018-4878-against-south-korean-targets [x_refsource_MISC]

Authoritative record: CVE-2018-4878 at cve.org

Weaknesses: CWE-416

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2018-4878 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.