CVE-2021-37212Network attack vector

Bulletin disclosure and modification via attacker-controlled IDs

Published Aug 9, 2021 · Updated Sep 17, 2024

An IDOR in FLYGO 2021.4e and earlier allows remote authenticated users to read and modify arbitrary bulletins. The bulletin function accepts a bulletin ID from a URL parameter and resolves it without enforcing object-level authorization for the requested bulletin. A general-user account is required; exploitation exposes and alters bulletin content but provides no reported administrative access or service interruption.

CVSS severity5.4
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An IDOR in FLYGO 2021.4e and earlier allows remote authenticated users to read and modify arbitrary bulletins. The bulletin function accepts a bulletin ID from a URL parameter and resolves it without enforcing object-level authorization for the requested bulletin. A general-user account is required; exploitation exposes and alters bulletin content but provides no reported administrative access or service interruption.

The record

CVE
CVE-2021-37212
Published
Aug 9, 2021
Updated
Sep 17, 2024
Vendor
Larvata Digital Technology Co. Ltd.
Product
FLYGO
Classifications
CWE-639, CWE-706
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=2021.4e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Larvata Digital Technology Co. Ltd. · FLYGOversion=unspecified <=2021.4e

Published CVSS scores

5.4TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-706Use of Incorrectly-Resolved Name or Reference

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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