CVE-2026-51947 Deserialization in n/a
Remote attackers can execute arbitrary code in Pivotal CRM due to an incomplete fix for a deserialization vulnerability in the conversion service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-51947?
CVE-2026-51947 is a critical unsafe deserialization vulnerability in n/a, published on 1 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue in Pivotal CRM 6.6.4.08 and systems using patch-ghi-15381-cwe-502-20251225.zip (fixed in Pivotal CRM 6.6.5.10 and Patch_CWE502_20260316.zip) allows a remote attacker to execute arbitrary code via the Pivotal.Engine.Client.Services.Conversion.dll component. NOTE: this issue exists because of an incomplete fix for CVE-2026-39253.
Weakness: CWE-502
Which versions are affected by CVE-2026-51947?
How do I fix CVE-2026-51947?
No fix has been published for CVE-2026-51947 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-2026-51947 being exploited?
There is no known exploitation of CVE-2026-51947 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-556j-vv66-v5jp.