Adobe Flash Player Use-After-Free Vulnerability

CheckOps priority index

7.8/10 Patch within 7 days

Severity7.8

Probability9.5

Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 95.3% +0.1 pts in 7 days

CVSS 3.1 7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:

Exploited for 1,665 days 13 Apr 2022

CISA due date 04 May 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)13 Apr 2022
Exploited in EUVD (ENISA)13 Apr 2022
Used by ransomwareno
EPSS above 10 %95.3%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

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

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

Use-after-free vulnerability in Adobe Flash Player before 13.0.0.269 and 14.x through 16.x before 16.0.0.305 on Windows and OS X and before 11.2.202.442 on Linux allows remote attackers to execute arbitrary code via unspecified vectors, as exploited in the wild in February 2015, a different vulnerability than CVE-2015-0315, CVE-2015-0320, and CVE-2015-0322.

Affected products

Flash Player

Weaknesses (CWE)

CWE-416

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

02 Feb 2015
Published
13 Apr 2022
Exploitation reported (ENISA)
13 Apr 2022
Added to the KEV catalog
04 May 2022
CISA remediation due date
29 Oct 2026
EPSS peak: 95.3%

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