CVE-2026-55009
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.
CVSS
7.8
Alto
EPSS
1.7%
p74
KEV
—
Exploit Today
22
0-100
Publicado: 14 jul 2026 · Última mod.: 15 jul 2026 · CWE-502
1.7%EPSS · 30 días1.7%
2026-07-152026-07-16
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2021-422379.8 CRÍ99.9%
KEV—80Sitecore XP Remote Command Execution Vulnerability8dCVE-2026-456598.8 ALT86.8%
KEV—76Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability15dCVE-2026-125699.8 CRÍ66.0%
KEV—70PTC Windchill and FlexPLM Improper Input Validation Vulnerability17dCVE-2026-505229.8 CRÍ97.2%
——29Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.2dCVE-2025-560059.8 CRÍ96.7%
——29An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk. NOTE: A third-party states that this vulnerability should be rejected because the proof of concept does not demonstrate arbitrary code execution and fails to complete successfully.2dCVE-2026-258749.8 CRÍ96.5%
——29LeRobot through 0.5.1 contains an unsafe deserialization vulnerability in the async inference pipeline where pickle.loads() is used to deserialize data received over unauthenticated gRPC channels without TLS in the policy server and robot client components. An unauthenticated network-reachable attacker can achieve arbitrary code execution on the server or client by sending a crafted pickle payload through the SendPolicyInstructions, SendObservations, or GetActions gRPC calls.3d