CVE-2026-59849
Libssh Vulnerability in NetApp Products
CVE-2026-59849: Libssh Vulnerability in NetApp Products. Not in the CISA KEV catalog. Low advisory severity (CVSS 3.1, 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.
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CVE-2026-59849 key facts
- CISA KEV
- Not listed (catalog checked )
- Highest advisory severity
- Low
- CVSS base score
- 3.1 (NetApp), 3.1 (Red Hat)
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L(Red Hat)
- Weakness
- CWE-835
- Fixed releases
- Red Hat: libssh-0:0.12.0-3.el10_2, libssh-main-0.12.1-4.hum1, RHSA-2026:55855, RHSA-2026:42922
- VulniPulse record
- Published · Updated
Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-59849; bulletin-wide values are not repeated here.
Is CVE-2026-59849 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-59849 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-2026-59849?
Upgrade to a fixed release named by the vendor:
- Red Hat: libssh-0:0.12.0-3.el10_2, libssh-main-0.12.1-4.hum1, RHSA-2026:55855, RHSA-2026:42922
- Do not connect to untrusted SSH servers and do not use certificates until patched. (Red Hat)
Vendor advisory comparison
NetApp
1 advisory- Advisory severityLow3.1
Low [CVE-2026-59849] Libssh Vulnerability in NetApp Products
NTAP-20260807-0014Source published Source updated
Libssh versions 0.11.0 prior to 0.11.5 and prior to 0.12.1 are susceptible to a vulnerability which when successfully exploited could lead to Denial of Service (DoS). Successful exploitation of this vulnerability could lead to Denial of Service (DoS). 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
- 0.11.0
- 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.
Red Hat
1 advisory- Advisory severityLow3.1
Low [CVE-2026-59849] denial of service via automatic certificate authentication loop
CVE-2026-59849Source published Source updated
A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service. Red Hat severity: Low — CVSS 3.1 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-835. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Hardened Images. Red Hat lists Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected. Red Hat fixing advisory: RHSA-2026:55855, 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 Hardened Images
- Red Hat package: libssh
- 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-main-0.12.1-4.hum1
- RHSA-2026:55855
- RHSA-2026:42922
- Mitigation guidance
- Do not connect to untrusted SSH servers and do not use certificates until patched.
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