CVE-2026-18852

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 1.6% of scored records. A rank, not a probability.

NVD base score

1.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-08-12.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-04 23:15Z1 MO AGO

Last updated

2026-08-05 14:28Z1 MO AGO

Reserved

2026-08-04

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 4.8)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-754Improper Check for Unusual or Exceptional ConditionsClass

Data version

5.2

Document digest

021394fe34c08315e42db78805ca9d2546454466d3a41580612196ce0daaec5c

• vuldb.comVDB-385857 | epsilla-cloud vectordb Filter expr.cpp ShuntingYard unusual conditionhttps://vuldb.com/vuln/385857vdb-entrytechnical-description
• vuldb.comVDB-385857 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/385857/ctisignaturepermissions-required
• vuldb.comCVE-2026-18852 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-18852third-party-advisory
• vuldb.comSubmit #858196 | epsilla-cloud VectorDB df5a5f5afb85a2376a0f2f316c79dea9b2c6ac7a CWE-754: Improper Check for Unusual or Exceptional Conditionshttps://vuldb.com/submit/858196third-party-advisory
• github.comhttps://github.com/fa1c4/security-advisories/tree/main/VectorDBrelated
• github.comhttps://github.com/fa1c4/security-advisories/tree/main/VectorDB/PoCexploit