CVE-2026-26986

MEDIUMNVD 7.55.5
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 5.5 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:github_m
Trending — 3 sources updated this weekElevated
5.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, rail_window_free dereferences a freed xfAppWindow pointer during HashTable_Free cleanup because xf_rail_window_common calls free(appWindow) on title allocation failure without first removing the entry from the railWindows hash table, leaving a dangling pointer that is freed again on disconnect. Version 3.23.0 fixes the vulnerability.

CVSS v3
7.5
EG Score
5.5(low)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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 computed
Severity55% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

February 25, 2026

Last Modified

June 17, 2026

References (8)

Vendor Advisories for CVE-2026-26986(14)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatfreerdp-2:3.10.3-3.el10_0.72026-05-26redhat
redhatfreerdp-0:2.1.1-5.el7_9.92026-05-26redhat
redhatfreerdp-2:2.2.0-14.el8_42026-05-20redhat
redhatfreerdp-2:2.11.7-7.el9_8.32026-05-19redhat
redhatfreerdp-2:3.10.3-12.el10_2.52026-05-19redhat
redhatfreerdp-2:2.11.7-1.el9_6.102026-05-13redhat
redhatfreerdp-2:2.2.0-7.el8_6.82026-05-13redhat
redhatfreerdp-2:2.2.0-12.el8_8.82026-05-13redhat
redhatfreerdp-2:2.11.2-1.el9_4.82026-05-13redhat
redhatfreerdp-2:2.11.7-1.el9_7.72026-05-13redhat
redhatfreerdp-2:2.4.1-6.el9_2.92026-05-12redhat
redhatfreerdp-2:2.4.1-3.el9_0.72026-05-12redhat
redhatfreerdp-2:2.11.7-9.el8_102026-05-11redhat
redhatfreerdp-2:3.10.3-5.el10_1.82026-05-11redhat

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.

Data Freshness Timeline

(refreshed 3× in last 7d / 3× 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.

  1. 2026-07-27 12:55 UTCEG score recompute
  2. 2026-07-27 12:55 UTCVendor advisory
  3. 2026-07-27 12:50 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-26986?
CVE-2026-26986 is a medium vulnerability published on February 25, 2026. FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, railwindowfree dereferences a freed xfAppWindow pointer during HashTableFree cleanup because xfrailwindowcommon calls free(appWindow) on title allocation failure without first removing the entry from the…
When was CVE-2026-26986 disclosed?
CVE-2026-26986 was first published in the National Vulnerability Database on February 25, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-26986 actively exploited?
CVE-2026-26986 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 61.6% of all scored CVEs.
What is the CVSS score of CVE-2026-26986?
CVE-2026-26986 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.5. The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-26986?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-26986, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-26986

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