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CVE-2026-20065

Vulnerability in Cisco Snort

CVSS score

5.8

EPSS probability

%0.4

Risk score

0.0

Published

7 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-20065 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-20065 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1ciscosnort View
2ciscosecure firewall threat defense View
3ciscosecure firewall threat defense View
4ciscosecure firewall threat defense View
5ciscosecure firewall threat defense View
6ciscosecure firewall threat defense View
7ciscosecure firewall threat defense View
8ciscosecure firewall threat defense View
9ciscosecure firewall threat defense View
10ciscosecure firewall threat defense View
11ciscosecure firewall threat defense View
12ciscosecure firewall threat defense View
13ciscosecure firewall threat defense View
14ciscosecure firewall threat defense View
15ciscosecure firewall threat defense View
16ciscosecure firewall threat defense View
17ciscosecure firewall threat defense View
18ciscosecure firewall threat defense View
19ciscosecure firewall threat defense View
20ciscosecure firewall threat defense View
21ciscosecure firewall threat defense View
22ciscosecure firewall threat defense View
23ciscosecure firewall threat defense View
24ciscosecure firewall threat defense View
25ciscosecure firewall threat defense View
26ciscosecure firewall threat defense View
27ciscosecure firewall threat defense View
28ciscosecure firewall threat defense View
29ciscosecure firewall threat defense View
30ciscosecure firewall threat defense View
31ciscosecure firewall threat defense View
32ciscosecure firewall threat defense View
33ciscosecure firewall threat defense View
34ciscosecure firewall threat defense View
35ciscosecure firewall threat defense View
36ciscosecure firewall threat defense View
37ciscosecure firewall threat defense View
38ciscosecure firewall threat defense View
39ciscosecure firewall threat defense View
40ciscosecure firewall threat defense View
41ciscosecure firewall threat defense View
42ciscosecure firewall threat defense View
43ciscosecure firewall threat defense View
44ciscosecure firewall threat defense View
45ciscosecure firewall threat defense View
46ciscosecure firewall threat defense View
47ciscosecure firewall threat defense View
48ciscosecure firewall threat defense View
49ciscosecure firewall threat defense View
50ciscosecure firewall threat defense View
51ciscosecure firewall threat defense View
52ciscounified threat defense snort intrusion prevention system engine View
53ciscounified threat defense snort intrusion prevention system engine View
54ciscounified threat defense snort intrusion prevention system engine View
55ciscounified threat defense snort intrusion prevention system engine View
56ciscounified threat defense snort intrusion prevention system engine View
57ciscounified threat defense snort intrusion prevention system engine View
58ciscounified threat defense snort intrusion prevention system engine View
59ciscounified threat defense snort intrusion prevention system engine View
60ciscounified threat defense snort intrusion prevention system engine View
61ciscounified threat defense snort intrusion prevention system engine View
62ciscounified threat defense snort intrusion prevention system engine View
63ciscounified threat defense snort intrusion prevention system engine View
64ciscounified threat defense snort intrusion prevention system engine View
65ciscounified threat defense snort intrusion prevention system engine View
66ciscounified threat defense snort intrusion prevention system engine View
67ciscounified threat defense snort intrusion prevention system engine View
68ciscounified threat defense snort intrusion prevention system engine View
69ciscounified threat defense snort intrusion prevention system engine View
70ciscounified threat defense snort intrusion prevention system engine View
71ciscounified threat defense snort intrusion prevention system engine View
72ciscounified threat defense snort intrusion prevention system engine View
73ciscounified threat defense snort intrusion prevention system engine View
74ciscounified threat defense snort intrusion prevention system engine View
75ciscounified threat defense snort intrusion prevention system engine View
76ciscounified threat defense snort intrusion prevention system engine View
77ciscounified threat defense snort intrusion prevention system engine View
78ciscounified threat defense snort intrusion prevention system engine View
79ciscounified threat defense snort intrusion prevention system engine View
80ciscounified threat defense snort intrusion prevention system engine View
81ciscounified threat defense snort intrusion prevention system engine View
82ciscounified threat defense snort intrusion prevention system engine View
83ciscounified threat defense snort intrusion prevention system engine View
84ciscounified threat defense snort intrusion prevention system engine View
85ciscounified threat defense snort intrusion prevention system engine View
86ciscounified threat defense snort intrusion prevention system engine View
87ciscounified threat defense snort intrusion prevention system engine View
88ciscounified threat defense snort intrusion prevention system engine View
89ciscounified threat defense snort intrusion prevention system engine View
90ciscounified threat defense snort intrusion prevention system engine View
91ciscounified threat defense snort intrusion prevention system engine View
92ciscounified threat defense snort intrusion prevention system engine View
93ciscounified threat defense snort intrusion prevention system engine View
94ciscounified threat defense snort intrusion prevention system engine View
95ciscounified threat defense snort intrusion prevention system engine View
96ciscounified threat defense snort intrusion prevention system engine View
97ciscounified threat defense snort intrusion prevention system engine View
98ciscounified threat defense snort intrusion prevention system engine View
99ciscounified threat defense snort intrusion prevention system engine View
100ciscounified threat defense snort intrusion prevention system engine View
101ciscounified threat defense snort intrusion prevention system engine View
102ciscounified threat defense snort intrusion prevention system engine View
103ciscounified threat defense snort intrusion prevention system engine View
104ciscounified threat defense snort intrusion prevention system engine View
105ciscounified threat defense snort intrusion prevention system engine View
106ciscounified threat defense snort intrusion prevention system engine View
107ciscounified threat defense snort intrusion prevention system engine View
108ciscounified threat defense snort intrusion prevention system engine View
109ciscounified threat defense snort intrusion prevention system engine View
110ciscounified threat defense snort intrusion prevention system engine View
111ciscounified threat defense snort intrusion prevention system engine View
112ciscounified threat defense snort intrusion prevention system engine View
113ciscounified threat defense snort intrusion prevention system engine View
114ciscounified threat defense snort intrusion prevention system engine View
115ciscounified threat defense snort intrusion prevention system engine View
116ciscounified threat defense snort intrusion prevention system engine View
117ciscounified threat defense snort intrusion prevention system engine View
118ciscounified threat defense snort intrusion prevention system engine View
119ciscounified threat defense snort intrusion prevention system engine View
120ciscounified threat defense snort intrusion prevention system engine View
121ciscounified threat defense snort intrusion prevention system engine View
122ciscounified threat defense snort intrusion prevention system engine View
Total affected vendors: 1|Products: 122

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
5.8CVSS V31MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:LNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-20065 is associated with the following CWEs:

CWE-667: Common Weakness Enumeration Entry CWE-667

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-20065 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwzvendor-advisory

CVSS Vector Radar Chart

5.8 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityLow

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

C
cisco logo
cisco

Weakness Type (CWE & CAPEC)

CWE-667

Similar Vulnerabilities

Get this vulnerability through the API

Affected products, version ranges, exploitation status and patch information in a single request, with a free key.

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  "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-20065"