CVE-2026-78319 PUBLISHED

TOCTOU Vulnerability in file exchange

Assigner: CERTVDE
Reserved: 24.08.2026 Published: 01.09.2026 Updated: 01.09.2026

A service running on the affected products contains a potential Time-of-Check Time-of-Use (TOCTOU) race condition. An unauthenticated remote attacker could exploit this race condition to bypass intended security controls. This may result in the execution of unauthorized code.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Sauter
Product	modu680-AS
Versions	Default: unaffected affected from 1.0.0 to 4.0.0 (excl.)

Vendor	Sauter
Product	modu660-AS
Versions	Default: unaffected affected from 1.0.0 to 4.0.0 (excl.)

Vendor	Sauter
Product	modu612-LC
Versions	Default: unaffected affected from 1.0.0 to 4.0.0 (excl.)

Vendor	Sauter
Product	ecos504
Versions	Default: unaffected affected from 1.0.0 to 7.0.0 (excl.)

Vendor	Sauter
Product	ecos505
Versions	Default: unaffected affected from 1.0.0 to 7.0.0 (excl.)

References

Problem Types

CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition CWE