CVE-2018-15981

Flash Player versions 31.0.0.148 and earlier have a type confusion vulnerability. Successful exploitation could lead to arbitrary code execution.

Published: 2018-11-29 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-15981 is rated High Risk (68.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 24.05%, 96th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2018-15981

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 27.92% 24.05% -3.87%
2 2026-03-01 24.05% 27.92% +3.87%
3 2026-02-26 — 24.05% —

Full EPSS history (53 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-15981

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2018-15981

OS Trackers for CVE-2018-15981

vendor priority summary link
redhat critical — https://access.redhat.com/security/cve/CVE-2018-15981
ubuntu medium CVE-2018-15981 medium priority: Ubuntu including 1 source packages (adobe-flashplugin), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): released 4, needs-triage 1. https://ubuntu.com/security/CVE-2018-15981

Affected software / configurations for CVE-2018-15981

Vendor Product Version Raw CPE
adobe flash_player_desktop_runtime <= 31.0.0.148 cpe:2.3:a:adobe:flash_player_desktop_runtime:*:*:*:*:*:*:*:*
adobe flash_player <= 31.0.0.148 cpe:2.3:a:adobe:flash_player:*:*:*:*:*:chrome:*:*
adobe flash_player <= 31.0.0.148 cpe:2.3:a:adobe:flash_player:*:*:*:*:*:edge:*:*
adobe flash_player <= 31.0.0.148 cpe:2.3:a:adobe:flash_player:*:*:*:*:*:internet_explorer_11:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*

References for CVE-2018-15981

cvelogic Threat Intelligence