ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-35547

When processing the header of an incoming message, libnv failed to properly validate the message size.

Published Apr 30, 2026 · catalog updated Jun 17, 2026 · When processing the header

Check if you run it

No confirmed exploitation is on record for CVE-2026-35547. EPSS is 0.40%. Act only if a listed version of When processing the header is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (When processing the header).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.40%
Remediation
Advisory link
Affected products
cpe freebsd/freebsd

When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.

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 freebsd/freebsd13.5

How to fix CVE-2026-35547

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-2026-35547. EPSS is 0.40%. Act only if a listed version of When processing the header is installed.

Which versions are affected?

Compare what you have installed with 13.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-122: Heap-based Buffer Overflow; CWE-130. EPSS 0.40%. 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. Apr 30, 2026 · NIST NVD

    Detected

    When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.

  2. Jun 17, 2026 · NIST NVD

    Updated

    When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.

Sources

  • CVE.orgVulnerability recordCVE-2026-35547

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-35547

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-35547

    When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an unp

    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.