CVE-2021-22761

Code execution via unchecked CGF data length

Published Jun 11, 2021 · Updated Aug 3, 2024

Memory corruption in Distributed Data Systems IGSS Definition 15.0.0.21140 and earlier allows attackers to execute code via a malicious CGF file. The CGF parser processes user-supplied data without first checking its length, producing memory corruption. A user must import the crafted file; successful exploitation runs code in the current Def.exe process and can disclose information.

CVSS severity7.8
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Distributed Data Systems IGSS Definition 15.0.0.21140 and earlier allows attackers to execute code via a malicious CGF file. The CGF parser processes user-supplied data without first checking its length, producing memory corruption. A user must import the crafted file; successful exploitation runs code in the current Def.exe process and can disclose information.

The record

CVE
CVE-2021-22761
Published
Jun 11, 2021
Updated
Aug 3, 2024
Vendor
Distributed Data Systems
Product
IGSS Definition
Classifications
CWE-119, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2021CVE 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?

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

  1. Affected versionversion=IGSS Definition (Def.exe) V15.0.0.21140 and prior

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · IGSS Definitionversion=IGSS Definition (Def.exe) V15.0.0.21140 and prior

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1204.002Malicious File
T1203Exploitation for Client Execution

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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