CISA Adds Two Known Exploited Vulnerabilities to Catalog
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-16232 Check Point SmartConsole Improper Authentication Vulnerability CVE-2026-50522 Microsoft SharePoint Deserialization of Untrusted Data Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities . CISA will continue to add vulnerabilities to the catalog that meet the specified criteria . Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form . Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigation guidance.
CSIRTS triage
- What
- A deserialization of untrusted data vulnerability exists in Microsoft SharePoint.
- Who is affected
- Microsoft SharePoint deployments that are exposed to the internet.
- Urgency
- This vulnerability is actively exploited and poses significant risks, necessitating prompt remediation.
- Action
- Federal agencies should prioritize rapid remediation as per CISA's guidance.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://www.cisa.gov/news-events/alerts/2026/07/22/cisa-adds-two-known-exploited-vulnerabilities-catalog
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2026-16232Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99% of all scored CVEs.
- Exploitation confirmedCVE-2026-50522Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-16232 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-50522 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownexploitedSecurity Alert: [Updated] Microsoft Releases July 2026 Security Updatesjpcert
- high[NEW] [high] Check Point SmartConsole: Multiple vulnerabilitiescert-bund
- unknownexploitedNCSC-2026-0264 [1.00] [M/H] Vulnerabilities fixed in Check Point Security Management productsncsc-nl
- criticalexploitedMicrosoft security advisory – July 2026 monthly rollup (AV26-698) – Update 3cccs
- criticalexploitedCheck Point security advisory (AV26-735) – Update 1cccs
- criticalexploited2026-009: Critical Vulnerabilities in Microsoft SharePointcert-eu
- unknownexploitedMultiple vulnerabilities in Check Point products (July 23, 2026)cert-fr-avis
- criticalexploitedCVE-2026-16232: An authentication bypass vulnerability in the Check Point SmartConsole login process allows an…nvd
- criticalexploitedCVE-2026-16232: Check Point SmartConsole Improper Authentication Vulnerabilitycisa-kev
- unknownexploitedMultiple vulnerabilities in Microsoft Sharepoint (July 22, 2026)cert-fr-alerte
- criticalexploitedCVE-2026-50522: Microsoft SharePoint Deserialization of Untrusted Data Vulnerabilitycisa-kev
- unknownexploitedNCSC-2026-0237 [1.02] [H/H] Vulnerabilities Fixed in Microsoft Officencsc-nl
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