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CVE-2026-20065Disclosure(cisco / secure_firewall_threat_defense)

LOWCVSS 5.8 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to an error in the binder module initialization logic of the Snort Detection Engine. An attacker could exploit this vulnerability by sending certain packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine restarts unexpectedly.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-667

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • secure_firewall_threat_defense
  • snort
  • unified_threat_defense_snort_intrusion_prevention_system_engine

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
cisco
Products
secure_firewall_threat_defensesnortunified_threat_defense_snort_intrusion_prevention_system_engine

121 versions affected across 3 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-03-04: 1Technical Details · 2026-03-04: 103-04
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • CVE@CVEnew
    Disclosure

    CVE-2026-20065 Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Dete… https://www.cve.org/CVERecord?id=CVE-2026-20065

    Post summary

    The post announces that CVE-2026-20065 affects Cisco’s Snort 3 Detection Engine, indicating a vulnerability that may allow unauthenticated remote attackers to impact the system, but provides no exploitation or mitigation details.

    0000089
    56.6K followersView on X
CPE platform detail122 entries

122 of 122 entries

PartVendorProductVersionTarget SWTarget HW
Appciscosecure_firewall_threat_defense7.0.0--
Appciscosecure_firewall_threat_defense7.0.0.1--
Appciscosecure_firewall_threat_defense7.0.1--
Appciscosecure_firewall_threat_defense7.0.1.1--
Appciscosecure_firewall_threat_defense7.0.2--
Appciscosecure_firewall_threat_defense7.0.2.1--
Appciscosecure_firewall_threat_defense7.0.3--
Appciscosecure_firewall_threat_defense7.0.4--
Appciscosecure_firewall_threat_defense7.0.5--
Appciscosecure_firewall_threat_defense7.0.6--
Appciscosecure_firewall_threat_defense7.0.6.1--
Appciscosecure_firewall_threat_defense7.0.6.2--
Appciscosecure_firewall_threat_defense7.0.6.3--
Appciscosecure_firewall_threat_defense7.0.7--
Appciscosecure_firewall_threat_defense7.0.8--
Appciscosecure_firewall_threat_defense7.0.8.1--
Appciscosecure_firewall_threat_defense7.1.0--
Appciscosecure_firewall_threat_defense7.1.0.1--
Appciscosecure_firewall_threat_defense7.1.0.2--
Appciscosecure_firewall_threat_defense7.1.0.3--
Appciscosecure_firewall_threat_defense7.2.0--
Appciscosecure_firewall_threat_defense7.2.0.1--
Appciscosecure_firewall_threat_defense7.2.1--
Appciscosecure_firewall_threat_defense7.2.10--
Appciscosecure_firewall_threat_defense7.2.10.2--
Appciscosecure_firewall_threat_defense7.2.2--
Appciscosecure_firewall_threat_defense7.2.3--
Appciscosecure_firewall_threat_defense7.2.4--
Appciscosecure_firewall_threat_defense7.2.4.1--
Appciscosecure_firewall_threat_defense7.2.5--
Appciscosecure_firewall_threat_defense7.2.5.1--
Appciscosecure_firewall_threat_defense7.2.5.2--
Appciscosecure_firewall_threat_defense7.2.6--
Appciscosecure_firewall_threat_defense7.2.7--
Appciscosecure_firewall_threat_defense7.2.8--
Appciscosecure_firewall_threat_defense7.2.8.1--
Appciscosecure_firewall_threat_defense7.2.9--
Appciscosecure_firewall_threat_defense7.3.0--
Appciscosecure_firewall_threat_defense7.3.1--
Appciscosecure_firewall_threat_defense7.3.1.1--
Appciscosecure_firewall_threat_defense7.3.1.2--
Appciscosecure_firewall_threat_defense7.4.0--
Appciscosecure_firewall_threat_defense7.4.1--
Appciscosecure_firewall_threat_defense7.4.1.1--
Appciscosecure_firewall_threat_defense7.4.2--
Appciscosecure_firewall_threat_defense7.4.2.1--
Appciscosecure_firewall_threat_defense7.4.2.2--
Appciscosecure_firewall_threat_defense7.4.2.3--
Appciscosecure_firewall_threat_defense7.4.2.4--
Appciscosecure_firewall_threat_defense7.6.0--
Appciscosnort---
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.10.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.11.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.3a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.4a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.4b--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.5--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.5a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.5b--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.5c--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.5d--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.12.6--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.13.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.14.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.15.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.15.2a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.15.2c--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.15.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.15.3a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.15.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.15.4c--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.16.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.17.1--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.18.1--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.18.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.18.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.2.1r--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.4a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.5--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.6--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.7--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.8--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.3.8a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.4.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.4.1b--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.4.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.5.1--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.5.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.3a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.5--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.6--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.6a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.7--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.8--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.6.8a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.7.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.7.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.8.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.2a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.3a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.4a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.5a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.5e--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.5f--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.6--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.7a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.7b--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.9.8--

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