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Vulnerabilities

Vulnerability · CVE-2026-42899

Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Published May 12, 2026 · catalog updated Jul 15, 2026 · Loop with unreachable exit

Check if you run it

No confirmed exploitation is on record for CVE-2026-42899. EPSS is 2.44%. Act only if a listed version of Loop with unreachable exit is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Loop with unreachable exit).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.44%
Remediation
Advisory link
Affected products
cpe microsoft/.net

Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/.netversion unspecified

How to fix CVE-2026-42899

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-42899. EPSS is 2.44%. Act only if a listed version of Loop with unreachable exit is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-835: Infinite Loop. EPSS 2.44%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 12, 2026 · NIST NVD

    Detected

    Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.

  2. Jul 15, 2026 · NIST NVD

    Updated

    Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Sources

  • CVE.orgVulnerability recordCVE-2026-42899

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-42899

    30-day exploitation probability 2.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-42899

    Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.