Cisco IOS XE Software Security Hardening Release: August 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. Thes...

IOSSecuritySuite v2.3.0

⭐️ Do you want to become a certified iOS Application Security Engineer? ⭐️ Check out our practical & fully online course at: https://courses.securing.pl/courses/iase ISS Description by @r3ggi 🌏 iOS Security Suite is an advanced and easy-to-use platform security & anti-tampering library written in...

PT-2026-68249

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description Insufficient error handling in the web-based management interface allows an authenticated remote attacker with low privileges to trigger a denial of service DoS condition. The...

CVE-2026-20270: Incorrect Calculation

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The...

CVE-2026-20269: Improper Control of a Resource Through its Lifetime

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The...

CVE-2026-20268: Improper Restriction of Operations within the Bounds of a Memory Buffer

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The...

PT-2026-68234

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description Improper access control issues were identified during an internal security review. These issues fall under the Common Weakness Enumeration CWE Pillar CWE-284, which refers to...

CVE-2026-20124: Missing Release of Resource after Effective Lifetime

A vulnerability in the Simple Network Management Protocol SNMP subsystem of Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload, resulting in a denial of service DoS condition. This vulnerability is due to improper error handling when parsing...

PT-2026-68235

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description An issue exists involving improper restriction of operations within the bounds of a memory buffer. This is categorized under CWE-119, which refers to memory corruption...

PT-2026-68240

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description Improper input validation issues were identified during an internal security review. These issues fall under the Common Weakness Enumeration CWE Pillar CWE-20, which refers to t...

PT-2026-68230

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description An issue in the Simple Network Management Protocol SNMP subsystem allows an authenticated remote attacker to cause a device to reload, leading to a denial of service DoS...

PT-2026-68247

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description Insufficient input validation in the web-based management interface allows an authenticated remote attacker with low privileges to execute a denial of service DoS attack. By...

CVE-2026-20273: Improper Input Validation

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. T...

CVE-2026-20272: Improper Neutralization of Special Elements in Output Used by a Downstream Component

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The...

PT-2026-68237

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description An internal security review identified issues related to incorrect calculations. These issues fall under the category of CWE-682, which refers to a correctness check that is...

PT-2026-68233

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description An issue in the Blocks Extensible Exchange Protocol BEEP feature allows an unauthenticated remote attacker to trigger a denial of service DoS condition. The flaw stems from...

CVE-2026-20271: Insufficient Control Flow Management

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The...

PT-2026-68239

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description An issue exists involving the improper neutralization of special elements, which falls under the category of CWE-74. This was identified during an internal security review...

PT-2026-68244

Name of the Vulnerable Software and Affected Versions Cisco IOS Software affected versions not specified Cisco IOS XE Software affected versions not specified Description An issue in the Extensible Messaging Client Protocol XMCP, also known as the External Client protocol, allows an unauthenticat...

PT-2026-68236

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software affected versions not specified Description An issue exists involving improper control of a resource through its lifetime, which falls under the Common Weakness Enumeration CWE Pillar CWE-664. This was identified during a...