In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
CVE-2026-59999
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 94% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 34(Track)EG Risk 34/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 6%
- KEV
- Not listed
Published
July 8, 2026
Last Modified
July 9, 2026
Advisory Details (3)
Auto-updated Jul 8, 2026oss-security - Announce: OpenSSH 10.4 released
https://www.openwall.com/lists/oss-security/2026/07/06/5'Announce: OpenSSH 10.4 released' - MARC
https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2Vendor Advisories for CVE-2026-59999(3)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- CVE-2026-59999Microsoft Security Response Center (MSRC)Medium
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
- RHSA-2026:37382Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
- GHSA-gcm2-x6hm-q4h3GitHub Security AdvisoriesMedium
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over...
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | ssh-askpass-gnome (1:10.2p1-2ubuntu3.4) @ resolute | 2026-07-27 | ubuntu |
| redhat | openssh-main-10.4p1-1.hum1 | 2026-07-09 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 20× in last 7d / 57× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-27 00:06 UTCEG score recompute
- 2026-07-27 00:06 UTCVendor advisory
- 2026-07-27 00:06 UTCGHSA enrichment
- 2026-07-26 14:54 UTCEPSS rescore
- 2026-07-26 14:54 UTCEPSS rescore
- 2026-07-26 12:32 UTCEG score recompute
- 2026-07-26 12:32 UTCVendor advisory
- 2026-07-26 12:32 UTCGHSA enrichment
- 2026-07-25 14:18 UTCEPSS rescore
- 2026-07-25 14:18 UTCEPSS rescore
- 2026-07-24 14:18 UTCEPSS rescore
- 2026-07-24 14:18 UTCEPSS rescore
- 2026-07-23 14:18 UTCEPSS rescore
- 2026-07-23 14:18 UTCEPSS rescore
- 2026-07-23 03:21 UTCEG score recompute▲ 1.60
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-21 15:25 UTCEPSS rescore
- 2026-07-21 15:25 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-18 10:04 UTCEPSS rescore
- 2026-07-17 00:14 UTCVendor advisory
- 2026-07-17 00:14 UTCGHSA enrichment
- 2026-07-16 17:03 UTCEPSS rescore
Show 32 moreShow fewer
- 2026-07-16 00:19 UTCVendor advisory
- 2026-07-16 00:19 UTCGHSA enrichment
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 02:00 UTCEPSS rescore
- 2026-07-15 02:00 UTCEPSS rescore
- 2026-07-15 00:24 UTCVendor advisory
- 2026-07-15 00:24 UTCGHSA enrichment
- 2026-07-14 00:29 UTCVendor advisory
- 2026-07-14 00:29 UTCGHSA enrichment
- 2026-07-13 22:31 UTCEPSS rescore
- 2026-07-13 06:13 UTCEPSS rescore
- 2026-07-13 06:13 UTCEPSS rescore
- 2026-07-13 00:34 UTCVendor advisory
- 2026-07-13 00:34 UTCGHSA enrichment
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-12 00:39 UTCVendor advisory
- 2026-07-12 00:39 UTCGHSA enrichment
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 00:43 UTCVendor advisory
- 2026-07-11 00:43 UTCGHSA enrichment
- 2026-07-10 00:48 UTCVendor advisory
- 2026-07-10 00:48 UTCGHSA enrichment
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-09 17:00 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
- 2026-07-09 00:51 UTCGHSA enrichment
- 2026-07-08 15:16 UTCEPSS rescore
- 2026-07-08 15:16 UTCEPSS rescore
- 2026-07-08 00:55 UTCEG score recompute
- 2026-07-08 00:55 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-59999?
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What is the CVSS score of CVE-2026-59999?
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Dependency Blast Radius
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