CVE-2023-40833Public exploitNetwork attack vector

Cloud-credential disclosure via unauthenticated settings API

Published Oct 12, 2023 · Updated Aug 2, 2024

Information disclosure in Thecosy IceCMS 1.0.0 allows remote attackers to gain cloud-console privileges via an unauthenticated settings API. The getCosSetting endpoint returns Tencent Cloud COS configuration values, including secret identifiers and keys, without authentication. Any remote attacker able to reach the endpoint can obtain those credentials and use the associated cloud account, including disrupting hosted services.

CVSS severity9.8
Critical
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Thecosy IceCMS 1.0.0 allows remote attackers to gain cloud-console privileges via an unauthenticated settings API. The getCosSetting endpoint returns Tencent Cloud COS configuration values, including secret identifiers and keys, without authentication. Any remote attacker able to reach the endpoint can obtain those credentials and use the associated cloud account, including disrupting hosted services.

The record

CVE
CVE-2023-40833
Published
Oct 12, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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

9.8NVDCVSS: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

T1552Unsecured Credentials

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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