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Vulnerability Assessment

Weakness
CWE
CWE-191
ASVS 5.0
V15 - Secure Coding and Architecture Integer underflow checks
Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. CISA has confirmed active exploitation in the wild. Public proof-of-concept exploit code is available. EPSS exploitation probability: 93.06%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.
Act Now Prioritize within 24-48h. Why: In CISA KEV with patch available.
Exploited in the wild (CISA KEV) Patch available 93.1% exploitation probability (EPSS)

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AnalysisAI

Integer underflow in Adobe Flash Player before 11.7.700.261 and 11.8.x through 12.0.x before 12.0.0.44 on Windows and Mac OS X, and before 11.2.202.336 on Linux, allows remote attackers to execute. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-191. Integer underflow in Adobe Flash Player before 11.7.700.261 and 11.8.x through 12.0.x before 12.0.0.44 on Windows and Mac OS X, and before 11.2.202.336 on Linux, allows remote attackers to execute arbitrary code via unspecified vectors. Affected products include: Adobe Flash Player, Google Chrome, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server. Version information: before 11.7.700.261.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Added to CISA KEV
Apr 21, 2026 - 15:31 CISA
CVE Published
Feb 05, 2014 - 05:15 cve.org
CRITICAL 9.8

DescriptionCVE.org

Integer underflow in Adobe Flash Player before 11.7.700.261 and 11.8.x through 12.0.x before 12.0.0.44 on Windows and Mac OS X, and before 11.2.202.336 on Linux, allows remote attackers to execute arbitrary code via unspecified vectors.

Threat Intelligence Overview

Threat Score
7.8/10
Composite threat intelligence
EPSS Score
93.1%
Top 0% exploitable
Exploit
POC
Public exploit code exists
Data Quality
7 sources
Confidence: High
NVD CVE.org CISA KEV EPSS POC (1) Exploit-DB VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV Yes
Public POC Yes
EPSS 93.1%
Patch available Yes
Active threat Yes
Deciding rule
In CISA KEV with patch available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Immediate
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
High

Priority Score

227
Low Medium High Critical
KEV: +50
EPSS: +93
CVSS: +49
PoC: +20
Weaponized: +15
Threat intel: 0
Gov advisory: 0

Attack Technique

Integer Overflow MEDIUM

Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:flash_player:*:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:6.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:11:sp2:*:*:*:*:*:*
cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3:*:*:*:*:*:*

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Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and 16.x through 16.0.0.287 on Window
CVE-2011-0609 HIGH POC
7.8 Mar 15

Adobe Flash Player 10.2 and earlier across all platforms contain an unspecified vulnerability allowing remote code execu
CVE-2015-3043 CRITICAL POC
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Adobe Flash Player before 13.0.0.281 and 14.x through 17.x before 17.0.0.169 on Windows and OS X and before 11.2.202.457
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Unspecified vulnerability in Adobe Flash Player before 11.3.300.271 on Windows and Mac OS X and before 11.2.202.238 on L
CVE-2014-0502 HIGH POC
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Double free vulnerability in Adobe Flash Player before 11.7.700.269 and 11.8.x through 12.0.x before 12.0.0.70 on Window
CVE-2015-7645 HIGH POC
7.8 Oct 15

Adobe Flash Player 18.x through 18.0.0.252 and 19.x through 19.0.0.207 on Windows and OS X and 11.x through 11.2.202.535

Same weakness CWE-191 – Integer Underflow

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CVE-2015-5212 MEDIUM
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CVE-2024-23313 CRITICAL POC
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CVE-2021-3323 CRITICAL POC
9.8
CVE-2021-21811 CRITICAL POC
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CVE-2026-54754 CRITICAL POC
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Same technique RCE

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CVE-2021-44228 CRITICAL POC
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CVE-2023-3519 CRITICAL POC
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References

Advisories & patches
PATCH http://helpx.adobe.com/security/products/flash-player/apsb14-04.html ADVISORY https://vuldb.com/vuln/12193 REF http://googlechromereleases.blogspot.com/2014/02/stable-channel-update.html REF http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00000.html REF http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00001.html REF http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00006.html REF http://rhn.redhat.com/errata/RHSA-2014-0137.html REF http://secunia.com/advisories/56437 REF http://secunia.com/advisories/56737 REF http://secunia.com/advisories/56780 REF http://secunia.com/advisories/56799 REF http://secunia.com/advisories/56839 REF http://www.osvdb.org/102849 REF http://www.securityfocus.com/bid/65327 REF http://www.securitytracker.com/id/1029715 REF https://exchange.xforce.ibmcloud.com/vulnerabilities/90884 REF https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-0497

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