CriticalCISA KEVExploited in the wildPublic exploit

Heap-based Buffer Overflow in Adobe Flash Player

IdentifiersCVE-2015-3113CWE-122· Heap-based Buffer Overflow

CVE-2015-3113 is a heap-based buffer overflow vulnerability in Adobe Flash Player affecting versions before 13.0.0.296 and 14.x through 18.x before 18.0.0.194 on Windows and OS X, and before 11.2.202.468 on Linux. The flaw allows memory corruption in the Flash Player process via a crafted Flash object or other unspecified malicious content, leading to out-of-bounds heap writes/overflow conditions. Adobe reported the issue as being exploited in the wild in June 2015. The provided context also associates this vulnerability with APT3 activity and exploit-kit usage, including Hunter exploit kit campaigns.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can allow remote attackers to execute arbitrary code in the context of the user running the vulnerable browser/Flash plugin. In practical terms, this enables compromise of the endpoint through a drive-by or phishing-delivered exploit, followed by payload execution such as RAT deployment, downloader execution, or banking malware installation. Because exploitation occurs client-side, impact depends on the privileges of the current user, but can include full user-level system compromise and subsequent post-exploitation activity.

Mitigation

If you can’t patch tonight, do this now.

Where patching cannot be performed immediately, disable or remove Adobe Flash Player, especially in browsers exposed to untrusted web content. Restrict execution of Flash content through click-to-play, application control, browser isolation, or plugin whitelisting. Reduce exposure by blocking access to untrusted sites and phishing links, and monitor for exploit-kit or malicious document delivery paths associated with Flash content. Running users without administrative privileges can reduce post-exploitation impact, though it does not prevent code execution in the user context.

Remediation

Patch, then assume compromise.

Apply Adobe’s security updates that remediate CVE-2015-3113. Fixed versions identified in the provided content are Adobe Flash Player 13.0.0.296 and later for the 13.x branch, 18.0.0.194 and later for affected 14.x through 18.x releases on Windows and OS X, and 11.2.202.468 and later on Linux. Organizations should upgrade all browser-integrated and standalone Flash installations and verify that embedded enterprise images and third-party packaged browser runtimes are also updated.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

AdobeFlash Playerapplication

Hewlett Packard EnterpriseInsight Orchestrationapplication

Hewlett Packard EnterpriseSystem Management Homepageapplication

Hewlett Packard EnterpriseSystems Insight Managerapplication

Hewlett Packard EnterpriseVersion Control Agentapplication

Hewlett Packard EnterpriseVersion Control Repository Managerapplication

Hewlett Packard EnterpriseVirtual Connect Enterprise Managerapplication

OpensuseEvergreenoperating_system

OpensuseOpensuseoperating_system

Red HatEnterprise Linux Desktopoperating_system

Red HatEnterprise Linux Eusoperating_system

Red HatEnterprise Linux Serveroperating_system

Red HatEnterprise Linux Workstationoperating_system

SuseLinux Enterprise Desktopoperating_system

SuseLinux Enterprise Workstation Extensionoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app

proofpoint threat insight blogNews

Aug 27, 2015

Hunter Exploit Kit Targets Banking Customers | Proofpoint US

An Adobe Flash zero-day vulnerability disclosed in June 2015 and used by the Hunter exploit kit.

mitre attackNews

Jan 25, 2026

Exploitation for Client Execution, Technique T1203 - Enterprise | MITRE ATT&CK®

An Adobe Flash Player vulnerability exploited for code execution.

mitre attackNews

Jan 25, 2026

APT3, Gothic Panda, Pirpi, UPS Team, Buckeye, Threat Group-0110, TG-0110, Group G0022 | MITRE ATT&CK®

An Adobe Flash Player client-side vulnerability exploited by APT3 for client execution (initial compromise).

mitre attackNews

Jan 25, 2026

Exploitation for Client Execution, Technique T1203 - Enterprise | MITRE ATT&CK®

An Adobe Flash Player vulnerability used for code execution.

+2 more in the timeline

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence2

Every observed campaign linking this CVE to a named adversary.

Associated malware2

Malware families riding this exploit, with evidence and IOCs.

Detection signatures2

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES

MITRE CVE

cve.org · CVE-2015-3113

NVD

nvd.nist.gov/vuln/detail/CVE-2015-3113

MITRE CWE · CWE-122

Heap-based Buffer Overflow

Third Party Advisory

lists.opensuse.org/opensuse-security-announce/2015-06/msg00020.html

Third Party Advisory

lists.opensuse.org/opensuse-security-announce/2015-06/msg00025.html

Third Party Advisory

lists.opensuse.org/opensuse-security-announce/2015-07/msg00002.html

Third Party Advisory

rhn.redhat.com/errata/RHSA-2015-1184.html

Third Party Advisory

security.gentoo.org/glsa/201507-13

Third Party Advisory

suse.com/security/cve/CVE-2015-3113.html

Mailing List

marc.info/?l=bugtraq&m=144050155601375&w=2

Issue Tracking

bugzilla.redhat.com/show_bug.cgi?id=1235036

Issue Tracking

bugzilla.suse.com/show_bug.cgi?id=935701

+2 more references

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