PT-2026-2003 · Upsonic · Upsonic

Alessio Dalla Piazza · Published 2026-01-09 · Updated 2026-01-23 · CVE-2026-0773

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Upsonic (affected versions not specified)

Description A remote code execution issue exists in Upsonic due to deserialization of untrusted data. This allows for unauthenticated exploitation, potentially impacting systems that rely on the component. The issue has a CVSS score of 9.8. The vulnerability was discovered using AI-powered techniques, raising concerns about the increasing accessibility of automated vulnerability research. The vulnerability could be exploited to target APIs, authentication flows, and business logic.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2026-0773

ZDI-26-042

Affected Products

Upsonic

References · 6

• https://zerodayinitiative.com/advisories/ZDI-26-042 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-0773 · Security Note
• https://twitter.com/CVEnew/status/2014576949260386645 · Twitter Post
• https://twitter.com/0dayPublishing/status/2014547729733595405 · Twitter Post
• https://twitter.com/CveFindCom/status/2014558723067240471 · Twitter Post
• https://twitter.com/alessio_dp/status/2011759881615712551 · Twitter Post