CVE-2022-40305Public exploitNetwork attack vector

Internal port scanning via unvalidated server parameter

Published Sep 9, 2022 · Updated Aug 3, 2024

SSRF in Canto Cumulus 11.1.3 and earlier allows remote attackers to scan internal ports via the unauthenticated login workflow. The /cwc/login form passes its unvalidated server parameter in a POST to /cwc/catalog, which opens a TCP connection to the supplied host and port. No credentials or user interaction are required; differing HTTP responses expose port reachability, while held-open connections can exhaust resources.

CVSS severity9.8
Critical
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Canto Cumulus 11.1.3 and earlier allows remote attackers to scan internal ports via the unauthenticated login workflow. The /cwc/login form passes its unvalidated server parameter in a POST to /cwc/catalog, which opens a TCP connection to the supplied host and port. No credentials or user interaction are required; differing HTTP responses expose port reachability, while held-open connections can exhaust resources.

The record

CVE
CVE-2022-40305
Published
Sep 9, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, CAPEC-664, T1046
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
T1046Network Service Scanning

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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