CISA KEV · Known exploitedHigh

CVE-2018-4878

Adobe Flash Player

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.

CVSS
7.8
EPSS
89.5%
99.8% percentile
CISA KEV
Listed
Published
2018.02.07
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability89.5%
Technical severityCVSS 7.8

Vulnerability overview

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 product and versions

Product
Adobe Flash Player
Affected versions
Adobe Flash Player before 28.0.0.161, < 28.0.0.161, 6.0
Fixed versions
28.0.0.161

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

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

Due date: 2022.05.03
  1. 1
    Identify

    Confirm that Adobe Flash Player and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-416
KEV added
2021.11.03
Ransomware use
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CVE-2018-4878 — Adobe Flash Player | SECUFOCUS NOW