ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-96957

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

Published Oct 13, 2026 · catalog updated Oct 22, 2026 · Improper verification of cryptographic

Check if you run it

No confirmed exploitation is on record for CVE-2026-96957. EPSS is 0.45%. Act only if a listed version of Improper verification of cryptographic is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Improper verification of cryptographic).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.45%
Remediation
Advisory link
Affected products
Ubuntu:22.04:LTS dotnet7 · Ubuntu:24.04:LTS dotnet10 · Ubuntu:26.04:LTS dotnet10 · Ubuntu:26.10 dotnet10 · Ubuntu:26.10 dotnet11

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature 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.

  • Ubuntu:22.04:LTS dotnet77.0.105-0ubuntu1~22.04.1, 7.0.107-0ubuntu1~22.04.1, 7.0.108-0ubuntu1~22.04.1
  • Ubuntu:24.04:LTS dotnet100 → 10.0.113-10.0.13-0ubuntu1~24.04.1
  • Ubuntu:26.04:LTS dotnet100 → 10.0.113-10.0.13-0ubuntu1~26.04.1
  • Ubuntu:26.10 dotnet100 → 10.0.113-10.0.13-0ubuntu1~26.10.1
  • Ubuntu:26.10 dotnet110 → 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1

How to fix CVE-2026-96957

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-2026-96957. EPSS is 0.45%. Act only if a listed version of Improper verification of cryptographic is installed.

Which versions are affected?

Compare what you have installed with 7.0.105-0ubuntu1~22.04.1, 7.0.107-0ubuntu1~22.04.1, 7.0.108-0ubuntu1~22.04.1, 0 → 10.0.113-10.0.13-0ubuntu1~24.04.1, 0 → 10.0.113-10.0.13-0ubuntu1~26.04.1, 0 → 10.0.113-10.0.13-0ubuntu1~26.10.1, 0 → 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.45%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Ubuntu security

Code

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

Timeline

Detection, updates, and resolution for this record.

  1. Oct 13, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

  2. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    dotnet10 fixed in 10.0.113-10.0.13-0ubuntu1~24.04.1; dotnet10 fixed in 10.0.113-10.0.13-0ubuntu1~26.10.1; dotnet11 fixed in 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1; dotnet10 fixed in 10.0.113-10.0.13-0ubuntu1~26.04.1

  3. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    dotnet10 fixed in 10.0.113-10.0.13-0ubuntu1~24.04.1

  4. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    dotnet10 fixed in 10.0.113-10.0.13-0ubuntu1~26.10.1

  5. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    dotnet11 fixed in 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1

  6. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    dotnet10 fixed in 10.0.113-10.0.13-0ubuntu1~26.04.1

  7. Oct 22, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

Sources

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.