CVE-2026-58233 Remote Code Execution vulnerability in SAP Change and Transport System Attach Tool (ctsattach)
An authenticated attacker can achieve remote code execution and data theft by tricking a victim into processing a malicious archive file.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-58233?
CVE-2026-58233 is a high-severity unsafe deserialization vulnerability in SAP_SE SAP Change and Transport System Attach Tool (ctsattach), published on 14 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
SAP Change and Transport System Attach Tool (ctsattach) allows an authenticated attacker to supply a specially crafted archive file which, when processed by the application�s library, can trigger insecure deserialization and lead to remote code execution (RCE) on the system. Successful exploitation requires a victim to process the malicious archive, enabling the attacker to execute the RCE and extract sensitive information and gain control over the system and its processes. This vulnerability has a high impact on confidentiality and integrity of the data, with a low impact on the availability of the system.
Weakness: CWE-502
Which versions are affected by CVE-2026-58233?
How do I fix CVE-2026-58233?
No fix has been published for CVE-2026-58233 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-58233 being exploited?
There is no known exploitation of CVE-2026-58233 in the wild and no public exploit code.
Sources
Also known as GHSA-hfjv-fqqx-2hxw.