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CVE-2018-4878

Adobe — Adobe Flash Player Use-After-Free Vulnerability

Adobe · CWE-416 — Use after free · in CISA KEV since 2021-11-03

KEV since 2021 · listed over a yearRansomwareCISA KEVActively Exploited
88

EVRS 88 of 100 Immediate

Patch Immediately

Rank 190 of 2,954 tracked

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Why it scores 88

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and associated with known ransomware campaigns.

  • CISA KEVApplied
  • RansomwareApplied
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

flashplugin-nonfree -> 28.0.0.161ubuntu0.14.04.1 | flashplugin-nonfree -> 28.0.0.161ubuntu0.16.04.1

Affected versions

  • flash player< 28.0.0.161
  • macos
  • linux kernel
  • windows
  • enterprise linux desktop6.0
  • enterprise linux server6.0
  • enterprise linux workstation6.0
  • windows 10

+2 more affected products; see the full list at NVD.

Remediation

The impacted product is end-of-life and should be disconnected if still in use.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 7.8 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.895 (99.79th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Known CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2022-05-03 · KEV since 2021 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. None known Metasploit
EUVD cross-referenceENISA's record: CVSS 7.8 (v3.1), assigned by adobe. Listed ENISA EUVD

Description

NVD

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.

What CISA says to do