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Verdict

MEDIUM SEVERITY (CVSS 5.3)

What is this: Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker… (CWE-670) Affects Cisco Ios Xe.
Should you care: Rated medium severity — CVSS 5.3.
What to do: Patch when able.

OBSERVEDMODERATE EVIDENCE COVERAGEDeterministic · stored evidence only

Vulnerability investigation

Prioritize by applicability, impact, and exploitation evidence

CISA KEV status could not be verified from the available evidence. NVD rates the technical severity medium at CVSS 5.3. These are public vulnerability signals, not proof that a specific environment runs an affected version.

Exploitation status

KEV status unavailable

The KEV source did not return a conclusive status.

30-day exploitation likelihood

Unavailable

FIRST EPSS did not return a score.

Technical severity

5.3 · medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected surface

23 parsed products

Cisco Ios Xe, Cisco 1100-4P Integrated Services Router, Cisco 1100-8P Integrated Services Router

Weakness class

CWE-670

CWE describes the weakness category, not whether a deployed product is reachable or exploitable.

Corpus evidence

1 connectors · 42 citations

No related report text is available in the local corpus.

What the evidence supports

Findings stay bounded to named sources and observable infrastructure.

2 findings

CVSS 5.3 medium technical impact

HIGH

Network · Low · None

NIST NVD CVSS

CVSS measures technical severity and prerequisites; it does not measure observed exploitation likelihood.

23 affected product mappings

MODERATE

Cisco Ios Xe, Cisco 1100-4P Integrated Services Router, Cisco 1100-8P Integrated Services Router, Cisco 1101-4P Integrated Services Router, Cisco 1109-2P Integrated Services Router…

NVD CPE / CISA product metadata

Product names are candidate applicability pivots. Confirm exact deployed versions and vendor ranges before remediation decisions.

What remains unknown

Whether your environment runs an affected product and version is not established by this public lookup.
Reachability, compensating controls, and successful exploitation in a specific environment are not checked.
CISA KEV status is unavailable and must be retried before drawing an exploitation conclusion.
No locally ingested public report supplies exploit, actor, or campaign context for this CVE.

What this is

Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.

Evidence readiness

The base CVE appears first. Independent evidence is added without blocking the page.

Investigation status

Checking for newly completed evidence

Refreshing

NIST NVD

NVD evidence is available in this response

Ready

CISA KEV

Known-exploitation catalog check is pending

Pending

FIRST EPSS

Forensia does not request or publish EPSS while source rights are under review

Rights pending

Reports

Report links are still being resolved

Pending

Relationships

Product and vulnerability relationships are still being prepared

Pending

Affected products

Vendor/product strings parsed from local CPE URIs (no inferred ATT&CK).

Product	CPE (truncated)
Snort Snort	cpe:2.3:a:snort:snort::::::::
Cisco Secure Firewall Threat Defense	cpe:2.3:a:cisco:secure_firewall_threat_defense::::::::
Cisco Secure Firewall Management Center 2.9.17	cpe:2.3:a:cisco:secure_firewall_management_center:2.9.17:::::::*
Cisco Secure Firewall Management Center 2.9.16	cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:::::::*
Cisco Secure Firewall Management Center 2.9.15	cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:::::::*
Cisco Secure Firewall Management Center 2.9.14.14	cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.14:::::::*
Cisco Secure Firewall Management Center 2.9.14.0

products · 23 connectors · 1

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