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Highest advisory severityHigh 3 vendors · 4 advisories

CVE-2026-34477

CVE-2026-34477: 4 tracked advisory records across Apache, NetApp, Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

Vendor advisory comparison

Apache

1 advisory
  • Advisory severityMedium6.3

    Medium [CVE-2025-68161 +1] Apache Log4j: The fix for CVE-2025-68161 https://logging.apache.org/security.html#CVE-2025-68161 was incomplete: it addressed hostname…

    CVE-2026-34477Source published Source updated

    This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    The fix for CVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName system property, but not when configured through the verifyHostName attribute of the element. Although the verifyHostName configuration attribute was introduced in Log4j Core 2.12.0, it was silently ignored in all versions through 2.25.3, leaving TLS connections vulnerable to interception regardless of the configured value. A network-based attacker may be able to perform a man-in-the-middle attack when all of the following conditions are met: * An SMTP, Socket, or Syslog appender is in use. * TLS is configured via a nested element. * The attacker can present a certificate issued by a CA trusted by the appender's configured trust store, or by the default Java…

    Affected products in this advisory
    • Apache Log4j
    • Apache Log4j Core
    • Log4j
    Source-reported affected versions
    • through 2.25.3
    Source-reported fixed versions
    • 2.25.4
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

NetApp

2 advisories
  • Advisory severityHigh7.5

    High [CVE-2026-34477 +2] June 2026 IBM Db2 Apache Log4j Vulnerabilities in NetApp Products

    NTAP-20260626-0009Source published Source updated

    This bulletin covers 3 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    IBM Db2 Server versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4 on all platforms are susceptible to vulnerabilities in log4j v2.25.3. Successful exploitation of these vulnerabilities could lead to disclosure of sensitive information or addition or modification of data. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 11.5.0
    • 11.5.9
    • 12.1.0
    • 12.1.4

    1 more entries in the full advisory.

    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin
  • Advisory severityMedium6.3

    Medium [CVE-2026-34477] Apache Log4j Vulnerability in NetApp Products

    NTAP-20260513-0008Source published Source updated

    Multiple NetApp products incorporate Apache Log4j. Apache Log4j versions 2.12.0 through 2.25.3 and 3.0.0-alpha1 through 3.0.0-beta3 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information or addition or modification of data. NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 2.12.0
    • 2.25.3
    • 3.0.0
    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium6.8

    Medium [CVE-2026-34477] Man-in-the-middle attack due to incomplete hostname verification

    CVE-2026-34477Source published

    Man-in-the-middle attack due to incomplete hostname verification. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-295. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:21773 — update the affected packages (`sudo dnf update`).

    Related products — impact not confirmed
    • offline-knowledge-portal/rhokp-rhel9:1779996999
    • Red Hat Enterprise Linux
    Source-reported affected versions
    • offline-knowledge-portal/rhokp-rhel9:1779996999
    Source-reported fixed versions
    • RHSA-2026:21773
    Mitigation guidance
    • Update the affected package(s) to the fixed version shipped in RHSA-2026:21773 (`sudo dnf update` / `yum update`).
    Full advisory and evidenceOpen source bulletin

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