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CVE-2026-2450 upKeeper Solutions CVE debrief

CVE-2026-2450 is a .NET misconfiguration vulnerability in upKeeper Solutions upKeeper Instant Privilege Access that allows hijacking a privileged thread of execution. The issue affects upKeeper Instant Privilege Access through version 1.5.0. The CVSS score is 7.4, indicating a high severity vulnerability. Defenders responsible for upKeeper Solutions upKeeper Instant Privilege Access deployments should assess exposure and prioritize patching or mitigation efforts. This vulnerability can be exploited by an attacker to gain unauthorized access to sensitive areas of the system.

Vendor
upKeeper Solutions
Product
upKeeper Instant Privilege Access
CVSS
HIGH 7.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-14
Original CVE updated
2026-10-26
Advisory published
2026-04-14
Advisory updated
2026-10-26

Who should care

Defenders responsible for upKeeper Solutions upKeeper Instant Privilege Access deployments should assess exposure and prioritize patching or mitigation efforts.

Why it matters

CVE-2026-2450 is a high-severity vulnerability in upKeeper Solutions upKeeper Instant Privilege Access that allows hijacking a privileged thread of execution. Defenders should prioritize verifying the presence of this vulnerability in their environment and applying patches or mitigations as available.

  • Verify the presence of upKeeper Instant Privilege Access in your environment and apply patches or mitigations as available
  • Monitor for potential exploitation attempts
  • Assess the impact of a potential hijacking of a privileged thread of execution on your environment

Technical summary

The vulnerability is caused by a .NET misconfiguration in upKeeper Solutions upKeeper Instant Privilege Access, specifically a use of impersonation vulnerability. This allows an attacker to hijack a privileged thread of execution. The vulnerability affects upKeeper Instant Privilege Access through version 1.5.0 and has a CVSS score of 7.4, indicating high severity. Defenders should prioritize verifying the presence of this vulnerability in their environment and applying patches or mitigations as available.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their environment and applying patches or mitigations as available.

Recommended defensive actions

  • Verify the presence of upKeeper Instant Privilege Access in your environment
  • Check the version of upKeeper Instant Privilege Access and apply patches or mitigations as available
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional information from the vendor and other sources may be necessary to fully understand the issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-2450 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-2450

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-2450 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-2450

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://support.upkeeper.se/hc/en-us/articles/26783542353692-CVE-2026-2450-NET-misconfiguration-use-of-impersonation

    80f39f49-2521-4ee7-9e17-af5d55e8032f

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.