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Fencer Intel
high 7.8

CVE-2018-15982 kev+ ransomware in the critical feed json

Flash Player versions 31.0.0.153 and earlier, and 31.0.0.108 and earlier have a use after free vulnerability.

published 7y ago modified last mo. also EUVD-2018-7838

cvss
7.8
version 3.1, CNA
cisa kev
Exploited
added 2022-02-15, used in ransomware
epss
89.6%
EPSS 89.6% chance of exploitation in 30 days, percentile 99.7%
public exploits
1
Exploit-DB

Summary

Flash Player versions 31.0.0.153 and earlier, and 31.0.0.108 and earlier have a use after free vulnerability. Successful exploitation could lead to arbitrary code execution.

Patch / fix

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

  • flashplugin-nonfree Ubuntu 14.04 LTS 32.0.0.101ubuntu0.14.04.1
  • flashplugin-nonfree Ubuntu 16.04 LTS 32.0.0.101ubuntu0.16.04.1
  • flashplugin-nonfree Ubuntu 18.04 LTS 32.0.0.101ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2018-15982

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • flash-plugin RHEL 6 EXTRAS 32.0.0.101-1.el6_10

red hat advisories RHSA-2018:3795

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-15982 updated cvss 8.8

flash-plugin: Arbitrary Code Execution vulnerability (APSB18-42)

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) flash-plugin 32.0.0.101-1.el6_10 Red Hat Enterprise Linux Server Supplementary (v. 6) flash-plugin 32.0.0.101-1.el6_10 Red Hat Enterprise Linux Workstation Supplementary (v. 6) flash-plugin 32.0.0.101-1.el6_10
    fixed: vendor fix RHSA-2018:3795

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Found exploited as a 0-day (Project Zero)
  2. 0-day patched (Project Zero)
  3. First public exploit (EDB-46051)
  4. Published
  5. Added to CISA KEV
  6. CISA patch deadline
  7. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-08-15 (4y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
The impacted product is end-of-life and should be disconnected if still in use.
Vendor, product
Adobe, Flash Player
CISA name
Adobe Flash Player Use-After-Free Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Found
2018-11-29
Patched
2018-12-05
Details
project zero tracker

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1204.002 Malicious File exploitation
  • T1105 Ingress Tool Transfer primary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last mo.

Exploit prediction

89.58% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-46051 Adobe Flash ActiveX Plugin 28.0.0.137 - Remote Code Execution (PoC) local, 2018-12-24

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.