What happened

CISA added CVE-2014-0497 to the Known Exploited Vulnerabilities catalog on 2024-09-17, signaling confirmed in-the-wild exploitation CISA KEV. The entry states this is an Adobe Flash Player integer underflow vulnerability that permits arbitrary code execution by a remote attacker NVD entry. The KEV record marks Flash Player as end-of-life and directs users to discontinue utilization, with a due date of 2024-10-08 for federal agencies to remediate exposure CISA KEV.

Put simply: an attacker can deliver crafted content that triggers an integer underflow in Flash Player and run code under the user's context NVD entry. The vulnerability is tracked by MITRE as CVE-2014-0497, aligning with the public CVE corpus for consistent identification and cross-referencing MITRE CVE.

Why it matters

Inclusion in CISA KEV means active exploitation has been observed or is credibly reported, which elevates this from a theoretical risk to an operational one for any environment still running Flash CISA KEV. Flash Player is explicitly treated as EoL in the KEV entry, so no vendor patch path exists—exposure persists until the software is removed or fully disabled CISA KEV. Because the flaw enables remote code execution, even a single ungoverned instance (kiosk, legacy app wrapper, air-gapped workstation that occasionally browses) becomes a high-impact foothold for an attacker NVD entry.

Operational debt around legacy runtimes is exactly what KEV targets: vulnerabilities that attackers repeatedly weaponize because they remain deployed despite being deprecated CISA KEV. Integer underflow issues are mechanically simple to trigger when input parsing trusts attacker-controlled size values, which is why they frequently map to code execution when memory miscalculations drive unsafe allocations or copies NVD entry.

Technical detail

CVE-2014-0497 is categorized under CWE-191 (Integer Underflow), where arithmetic on signed/unsigned integers wraps below zero and yields an unexpectedly large value NVD entry. In practice, an underflowed length can cause a buffer size check to pass while subsequent operations write or read beyond intended bounds, enabling control over instruction flow MITRE CVE. For this CVE, the vulnerable component is Adobe Flash Player; when it processes attacker-supplied content, an integer underflow can be induced to achieve arbitrary code execution remotely NVD entry.

CISA’s KEV entry confirms exploitation and mandates remediation, which in this case is removal because the software is end-of-life with no supported security updates CISA KEV. The CVE record maintained by MITRE provides the canonical identifier and linkage to downstream advisories and analyses, ensuring consistent triage across tools and inventories MITRE CVE.

Defense

• Immediate action: treat any presence of Adobe Flash Player as an unacceptable risk and discontinue use per the KEV required action for this EoL product CISA KEV.
• Asset governance: enumerate endpoints and servers for Flash Player remnants and embedded runtimes; tie findings back to CVE-2014-0497 in vulnerability management so risk is tracked against a known-exploited RCE NVD entry.
• Execution control: block or remove the runtime rather than attempting partial mitigations, as KEV entries imply active adversary interest and no patch is available for EoL software CISA KEV.
• Monitoring: prioritize detections for attempts to render legacy Flash content and create containment playbooks that isolate the host on first observation of execution where possible MITRE CVE.

For agencies subject to CISA directives, the KEV due date for this entry is 2024-10-08; treat that as a hard stop for operational exposure and document compensating controls only as a short-lived bridge to full removal CISA KEV.

Lyrie Verdict

Flash remains a soft spot precisely because it’s “gone” on paper but still present in edge cases—prime hunting ground for automated adversaries that probe at machine speed CISA KEV. Lyrie flags and quarantines autonomous exploitation against deprecated interpreters by continuously correlating content-rendering attempts with KEV-backed RCE pathways like CVE-2014-0497, without waiting for human triage NVD entry. Our stance: purge Flash, then enforce zero-tolerance execution policies; Lyrie will kill residual runtime invocation in real time and raise a KEV-aligned incident for immediate eradication MITRE CVE.