High severity · published Oct 27, 2025
CVE-2025-59463
Denial-of-service (DoS) via chunk size mismatch
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
An attacker may cause chunk-size mismatches that block file transfers and prevent subsequent transfers.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TA
TLOC100-100 all Firmware versions · SICK AG
all versions · source: vendor
TF
Tloc100-100 Firmware · Sick
All versions, or not specified · source: NVD
Affected product
TA
TLOC100-100 all Firmware versions
SICK AG
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59463
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-59463
Vendor Advisory
https://sick.com/psirt
US Government Resource
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
Not Applicable
https://www.first.org/cvss/calculator/3.1
Vendor Advisory
https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0013.json
Vendor Advisory
https://www.sick.com/.well-known/csaf/white/2025/sca-2025-0013.pdf
Product
https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf
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