CVE-2021-31503

Code execution via uninitialized IGS parser pointer

Published Aug 3, 2021 · Updated Aug 3, 2024

Code execution in the IGS parser in OpenText Brava! Desktop 16.6.3.84 allows remote attackers to run code through a crafted IGS file. The parser accesses a pointer before initializing it while processing attacker-controlled IGS data, enabling control flow within the current process. Exploitation requires the target to open the file or visit a malicious page, and resulting code runs with the targeted user's privileges.

CVSS severity7.8
High
EPSS probability1.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in the IGS parser in OpenText Brava! Desktop 16.6.3.84 allows remote attackers to run code through a crafted IGS file. The parser accesses a pointer before initializing it while processing attacker-controlled IGS data, enabling control flow within the current process. Exploitation requires the target to open the file or visit a malicious page, and resulting code runs with the targeted user's privileges.

The record

CVE
CVE-2021-31503
Published
Aug 3, 2021
Updated
Aug 3, 2024
Vendor
OpenText
Product
Brava! Desktop
Classifications
CWE-824, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 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=Build 16.6.3.84 (package 16.6.3.134)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OpenText · Brava! Desktopversion=Build 16.6.3.84 (package 16.6.3.134)

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/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.

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-824Access of Uninitialized Pointer
T1203Exploitation for Client Execution
T1204.002User Execution Malicious File

Public exploit references

No public exploit references are available in this record.

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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