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Highest advisory severityMedium 2 vendors · 2 advisories

CVE-2026-59847

Libssh Vulnerability in NetApp Products

CVE-2026-59847: Libssh Vulnerability in NetApp Products. Not in the CISA KEV catalog. Medium advisory severity (CVSS 6.5, NetApp).

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

CVE-2026-59847 at a glance

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Medium
CVSS base score
6.5 (NetApp), 5.9 (Red Hat)
CVSS vector
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N (Red Hat)
Weakness
CWE-253
Fixed releases
  • Red Hat: libssh-0:0.12.0-3.el10_2, libssh-0:0.9.6-17.el8_10, libssh-0:0.10.4-19.el9_8, libssh-main-0.12.1-4.hum1, RHSA-2026:55855, RHSA-2026:62218 and 2 more in the advisory
Vendor advisories
2 from NetApp, Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-59847; bulletin-wide values are not repeated here.

Is CVE-2026-59847 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-59847 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-59847?

Upgrade to a fixed release named by the vendor:

  • Red Hat: libssh-0:0.12.0-3.el10_2, libssh-0:0.9.6-17.el8_10, libssh-0:0.10.4-19.el9_8, libssh-main-0.12.1-4.hum1, RHSA-2026:55855, RHSA-2026:62218

Vendor advisory comparison

NetApp

1 advisory
  • Advisory severityMedium6.5

    Medium [CVE-2026-59847] Libssh Vulnerability in NetApp Products

    NTAP-20260807-0010Source published Source updated

    Libssh versions 0.9.0 prior to 0.11.5 and prior to 0.12.1 are susceptible to a vulnerability which when successfully exploited could lead to addition or modification of data. Successful exploitation of this vulnerability could lead to 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
    • 0.9.0
    • 0.11.5
    • 0.12.1
    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 severityMedium5.9

    Medium [CVE-2026-59847] integrity downgrade via OpenSSL AES-GCM tag verification

    CVE-2026-59847Source published Source updated

    A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, allowing an in-path attacker to modify plaintext on the wire without detection. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N). Weakness: CWE-253. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images. Red Hat fixing advisory: RHSA-2026:55855, RHSA-2026:62218, RHSA-2026:62217, RHSA-2026:42922. Affected products named by the advisory: Red Hat package: libssh.

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 9
    • Red Hat Hardened Images

    1 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • libssh-0:0.12.0-3.el10_2
    • libssh-0:0.9.6-17.el8_10
    • libssh-0:0.10.4-19.el9_8
    • libssh-main-0.12.1-4.hum1

    4 more entries in the full advisory.

    Mitigation guidance
    Full advisory and evidenceOpen source bulletin

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