CVE-2021-33713

Application crash via incorrect hash-function argument

Published Jul 13, 2021 · Updated Aug 3, 2024

Denial of service in Siemens JT Utilities before 13.0.2.0 allows context-dependent attackers to crash the application via a crafted JT file. The JT parser passes an incorrect argument to a hash function while processing malformed file content, terminating the utility. Exploitation requires a user or calling workflow to process the attacker-supplied file, and the reported consequence is an application crash.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Siemens JT Utilities before 13.0.2.0 allows context-dependent attackers to crash the application via a crafted JT file. The JT parser passes an incorrect argument to a hash function while processing malformed file content, terminating the utility. Exploitation requires a user or calling workflow to process the attacker-supplied file, and the reported consequence is an application crash.

The record

CVE
CVE-2021-33713
Published
Jul 13, 2021
Updated
Aug 3, 2024
Vendor
Siemens
Product
JT Utilities
Classifications
CWE-688, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=All versions < V13.0.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · JT Utilitiesversion=All versions < V13.0.2.0

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-688Function Call With Incorrect Variable or Reference as Argument
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo