VulnSocial

CVE-2026-20054Disclosure(cisco / cyber_vision)

LOWCVSS 5.8 · MEDIUM

Signal is active with 2 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 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.  This vulnerability is due to improper error checking when decompressing VBA data. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to enter an infinite loop, causing a DoS condition.

cisco CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-835

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.

  • cyber_vision
  • secure_firewall_threat_defense
  • snort
  • unified_threat_defense_snort_intrusion_prevention_system_engine

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
cisco
Products
cyber_visionsecure_firewall_threat_defensesnortunified_threat_defense_snort_intrusion_prevention_system_engine

193 versions affected across 4 products

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-03-04: 2Technical Details · 2026-03-04: 203-04
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-20054 Unauthenticated Snort 3 VBA Decompression Vulnerability Causing Denial of Service https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-20054

    Post summary

    This post announces CVE-2026-20054, an unauthenticated Snort 3 VBA decompression vulnerability that leads to a denial of service, without providing any PoC, exploit code, or patch details.

    0000045
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-20054 Multiple Cisco products are affected by a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection… https://www.cve.org/CVERecord?id=CVE-2026-20054

    Post summary

    The notice reports that CVE-2026-20054 affects Cisco’s Snort 3 VBA feature, enabling unauthenticated remote attackers to disrupt detection, yet it provides no proof of concept, exploit, or patch details.

    0000098
    56.6K followersView on X
CPE platform detail194 entries

194 of 194 entries

PartVendorProductVersionTarget SWTarget HW
Appciscocyber_vision3.0.0--
Appciscocyber_vision3.0.1--
Appciscocyber_vision3.0.2--
Appciscocyber_vision3.0.3--
Appciscocyber_vision3.0.4--
Appciscocyber_vision3.0.5--
Appciscocyber_vision3.0.6--
Appciscocyber_vision3.1.0--
Appciscocyber_vision3.1.1--
Appciscocyber_vision3.1.2--
Appciscocyber_vision3.2.0--
Appciscocyber_vision3.2.1--
Appciscocyber_vision3.2.2--
Appciscocyber_vision3.2.3--
Appciscocyber_vision3.2.4--
Appciscocyber_vision4.0.0--
Appciscocyber_vision4.0.1--
Appciscocyber_vision4.0.2--
Appciscocyber_vision4.0.3--
Appciscocyber_vision4.1.0--
Appciscocyber_vision4.1.1--
Appciscocyber_vision4.1.2--
Appciscocyber_vision4.1.3--
Appciscocyber_vision4.1.4--
Appciscocyber_vision4.1.5--
Appciscocyber_vision4.1.6--
Appciscocyber_vision4.1.7--
Appciscocyber_vision4.2.0--
Appciscocyber_vision4.2.1--
Appciscocyber_vision4.2.2--
Appciscocyber_vision4.2.3--
Appciscocyber_vision4.2.4--
Appciscocyber_vision4.2.6--
Appciscocyber_vision4.3.0--
Appciscocyber_vision4.3.1--
Appciscocyber_vision4.3.2--
Appciscocyber_vision4.3.3--
Appciscocyber_vision4.4.0--
Appciscocyber_vision4.4.1--
Appciscocyber_vision4.4.2--
Appciscocyber_vision4.4.3--
Appciscocyber_vision5.0.0--
Appciscocyber_vision5.0.1--
Appciscocyber_vision5.0.2--
Appciscocyber_vision5.1.0--
Appciscocyber_vision5.1.1--
Appciscocyber_vision5.1.2--
Appciscocyber_vision5.1.3--
Appciscocyber_vision5.2.0--
Appciscocyber_vision5.2.1--
Appciscocyber_vision5.3.0--
Appciscocyber_vision5.3.1--
Appciscocyber_vision5.3.2--
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_defense7.4.3--
Appciscosecure_firewall_threat_defense7.6.0--
Appciscosecure_firewall_threat_defense7.6.1--
Appciscosecure_firewall_threat_defense7.6.2--
Appciscosecure_firewall_threat_defense7.6.2.1--
Appciscosecure_firewall_threat_defense7.7.0--
Appciscosecure_firewall_threat_defense7.7.10--
Appciscosecure_firewall_threat_defense7.7.10.1--
Appciscosnort---
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.1a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.5--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.6--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.7--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.12.8--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.6.1--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.6.10--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.6.5--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.6.6--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.6.7a--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine16.6.9--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine17.1.1--
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--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine3.17.0s--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engine3.17.1s--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginedenali-16.3.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginedenali-16.3.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginedenali-16.3.5--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginedenali-16.3.7--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginedenali-16.3.9--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engineeverest-16.6.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engineeverest-16.6.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_engineeverest-16.6.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginefuji-16.9.2--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginefuji-16.9.3--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginefuji-16.9.4--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginefuji-16.9.5--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginefuji-16.9.6--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginefuji-16.9.7--
OSciscounified_threat_defense_snort_intrusion_prevention_system_enginefuji-16.9.8--

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