VulnSocial

CVE-2026-20311Patch

LOWCVSS 6.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient error handling in the web-based management interface. An attacker could exploit this vulnerability by authenticating with a malformed certificate. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-126

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-16: 1Patch / Workaround · 2026-08-16: 1Technical Details · 2026-08-16: 108-16
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • CyberSignal | Cybersecurity News@XQOPTRX
    Patch

    CyberSec Daily ✓ · 🖥️ Network Operations · August 16, 2026 🎯 Cisco IOS XE Web UI flaw creates device-reload risk CVE-2026-20311 could allow a low-privileged authenticated attacker to cause an affected IOS XE device to reload through the web-management interface. Administrators should restrict management access, eliminate unnecessary accounts and apply Cisco’s software update. 🔗 Cisco advisory #IOSXE #NetworkManagement #CiscoSecurity #BlueTeam

    Post summary

    The post alerts to a Cisco IOS XE Web UI flaw (CVE‑2026‑20311) that can trigger a device reload and recommends limiting access and applying Cisco’s software update.

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    65 followersView on X

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