CVE-2026-20053Disclosure(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 range checking when decompressing VBA data, which is user controlled. 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 an overflow of heap data, which could cause a DoS condition.

cisco CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3-vbavuls-96UcVVed

Weakness type (CWE)

CWE-122

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: 1 classified signal
General: 1 classified signal
2 total mentions across 1 day

Affected systems

Vendors

cisco

Products

cyber_visionsecure_firewall_threat_defensesnortunified_threat_defense_snort_intrusion_prevention_system_engine

119 versions affected across 4 products

Deep dive

Activity timeline2 mentions / 1d

Signal classification2 categories

Disclosure

150.0%

General

150.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Vulmon Vulnerability Feed@VulmonFeeds218d
General
CVE-2026-20053 Cisco Snort 3 VBA Decompression Vulnerability Enables Remote Denial of Service https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-20053
Post summary
The post references CVE-2026-20053 with a generic description of a VBA decompression flaw causing DoS, but provides no details on patches, exploitation tools, or active use.
0000058
4.0K followersView on X
CVE@CVEnew218d
Disclosure
CVE-2026-20053 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-2026-20053
Post summary
The text announces the CVE-2026-20053 vulnerability in Cisco Snort 3’s VBA feature, describing its unauthenticated remote exploitation potential but providing no PoC, exploit, or patch details.
00000107
56.6K followersView on X

CPE platform detail120 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

120 of 120 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	cisco	cyber_vision	3.0.0	-	-
App	cisco	cyber_vision	3.0.1	-	-
App	cisco	cyber_vision	3.0.2	-	-
App	cisco	cyber_vision	3.0.3	-	-
App	cisco	cyber_vision	3.0.4	-	-
App	cisco	cyber_vision	3.0.5	-	-
App	cisco	cyber_vision	3.0.6	-	-
App	cisco	cyber_vision	3.1.0	-	-
App	cisco	cyber_vision	3.1.1	-	-
App	cisco	cyber_vision	3.1.2	-	-
App	cisco	cyber_vision	3.2.0	-	-
App	cisco	cyber_vision	3.2.1	-	-
App	cisco	cyber_vision	3.2.2	-	-
App	cisco	cyber_vision	3.2.3	-	-
App	cisco	cyber_vision	3.2.4	-	-
App	cisco	cyber_vision	4.0.0	-	-
App	cisco	cyber_vision	4.0.1	-	-
App	cisco	cyber_vision	4.0.2	-	-
App	cisco	cyber_vision	4.0.3	-	-
App	cisco	cyber_vision	4.1.0	-	-
App	cisco	cyber_vision	4.1.1	-	-
App	cisco	cyber_vision	4.1.2	-	-
App	cisco	cyber_vision	4.1.3	-	-
App	cisco	cyber_vision	4.1.4	-	-
App	cisco	cyber_vision	4.1.5	-	-
App	cisco	cyber_vision	4.1.6	-	-
App	cisco	cyber_vision	4.1.7	-	-
App	cisco	cyber_vision	4.2.0	-	-
App	cisco	cyber_vision	4.2.1	-	-
App	cisco	cyber_vision	4.2.2	-	-
App	cisco	cyber_vision	4.2.3	-	-
App	cisco	cyber_vision	4.2.4	-	-
App	cisco	cyber_vision	4.2.6	-	-
App	cisco	cyber_vision	4.3.0	-	-
App	cisco	cyber_vision	4.3.1	-	-
App	cisco	cyber_vision	4.3.2	-	-
App	cisco	cyber_vision	4.3.3	-	-
App	cisco	cyber_vision	4.4.0	-	-
App	cisco	cyber_vision	4.4.1	-	-
App	cisco	cyber_vision	4.4.2	-	-
App	cisco	cyber_vision	4.4.3	-	-
App	cisco	cyber_vision	5.0.0	-	-
App	cisco	cyber_vision	5.0.1	-	-
App	cisco	cyber_vision	5.0.2	-	-
App	cisco	cyber_vision	5.1.0	-	-
App	cisco	cyber_vision	5.1.1	-	-
App	cisco	cyber_vision	5.1.2	-	-
App	cisco	cyber_vision	5.1.3	-	-
App	cisco	cyber_vision	5.2.0	-	-
App	cisco	cyber_vision	5.2.1	-	-
App	cisco	cyber_vision	5.3.0	-	-
App	cisco	cyber_vision	5.3.1	-	-
App	cisco	cyber_vision	5.3.2	-	-
App	cisco	secure_firewall_threat_defense	7.2.0	-	-
App	cisco	secure_firewall_threat_defense	7.2.0.1	-	-
App	cisco	secure_firewall_threat_defense	7.2.1	-	-
App	cisco	secure_firewall_threat_defense	7.2.10	-	-
App	cisco	secure_firewall_threat_defense	7.2.10.2	-	-
App	cisco	secure_firewall_threat_defense	7.2.2	-	-
App	cisco	secure_firewall_threat_defense	7.2.3	-	-
App	cisco	secure_firewall_threat_defense	7.2.4	-	-
App	cisco	secure_firewall_threat_defense	7.2.4.1	-	-
App	cisco	secure_firewall_threat_defense	7.2.5	-	-
App	cisco	secure_firewall_threat_defense	7.2.5.1	-	-
App	cisco	secure_firewall_threat_defense	7.2.5.2	-	-
App	cisco	secure_firewall_threat_defense	7.2.6	-	-
App	cisco	secure_firewall_threat_defense	7.2.7	-	-
App	cisco	secure_firewall_threat_defense	7.2.8	-	-
App	cisco	secure_firewall_threat_defense	7.2.8.1	-	-
App	cisco	secure_firewall_threat_defense	7.2.9	-	-
App	cisco	secure_firewall_threat_defense	7.3.0	-	-
App	cisco	secure_firewall_threat_defense	7.3.1	-	-
App	cisco	secure_firewall_threat_defense	7.3.1.1	-	-
App	cisco	secure_firewall_threat_defense	7.3.1.2	-	-
App	cisco	secure_firewall_threat_defense	7.4.0	-	-
App	cisco	secure_firewall_threat_defense	7.4.1	-	-
App	cisco	secure_firewall_threat_defense	7.4.1.1	-	-
App	cisco	secure_firewall_threat_defense	7.4.2	-	-
App	cisco	secure_firewall_threat_defense	7.4.2.1	-	-
App	cisco	secure_firewall_threat_defense	7.4.2.2	-	-
App	cisco	secure_firewall_threat_defense	7.4.2.3	-	-
App	cisco	secure_firewall_threat_defense	7.4.2.4	-	-
App	cisco	secure_firewall_threat_defense	7.4.3	-	-
App	cisco	secure_firewall_threat_defense	7.6.0	-	-
App	cisco	secure_firewall_threat_defense	7.6.1	-	-
App	cisco	secure_firewall_threat_defense	7.6.2	-	-
App	cisco	secure_firewall_threat_defense	7.6.2.1	-	-
App	cisco	secure_firewall_threat_defense	7.7.0	-	-
App	cisco	secure_firewall_threat_defense	7.7.10	-	-
App	cisco	secure_firewall_threat_defense	7.7.10.1	-	-
App	cisco	snort	-	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.1a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.2	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.3	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.3a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.4	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.4a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.4b	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.5	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.5a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.5b	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.5c	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.5d	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.12.6	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.13.1a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.14.1a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.15.1a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.15.2a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.15.2c	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.15.3	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.15.3a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.15.4	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.15.4c	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.16.1a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.17.1	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.18.1	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.18.1a	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.18.2	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.9.4	-	-
OS	cisco	unified_threat_defense_snort_intrusion_prevention_system_engine	17.9.5e	-	-

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