CVE-2026-68579

CRITICALPre-NVD 9.69.6
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-02. A secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-51989 (ENISA EUVD) · GHSA-m4j8-6wj9-56fg (GitHub Security Advisories)Source: ENISA EUVD

9.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

FreeRDP before 3.30.0 (<= 3.29.0) contains a heap-based buffer overflow in the Windows clipboard client's CliprdrStream_Read function (client/Windows/wf_cliprdr.c). When an OLE paste consumer (e.g. explorer.exe) calls IStream::Read with a fixed-size buffer of cb bytes, CliprdrStream_Read requests file contents from the RDP server and then copies the response into the caller's buffer using the server-supplied length (req_fsize) instead of cb. A malicious or compromised RDP server can return an oversized CB_FILECONTENTS_RESPONSE, causing an out-of-bounds write of attacker-controlled data into the paste consumer's heap buffer when a user pastes server-offered clipboard file contents.

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
58
EG Risk 58/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity96% × 45%
Impact severity (EG Severity): CVSS 9.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.6): severity, escalated by confirmed exploitation. This CVE's 9.6 is its impact severity (EG Severity), not escalated.

EG Severity
9.6 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 2, 2026

Last Modified

September 29, 2026

Advisory Details (3)

Auto-updated Oct 7, 2026
Patch available. Sources: github, github_commit.
Web page

FreeRDP before 3.30.0 Heap Overflow via CliprdrStream_Read | Advisories | VulnCheck

https://www.vulncheck.com/advisories/freerdp-before-heap-overflow-via-cliprdrstream-read
GitHub advisoryMentions a patch (unverified)

Windows clipboard: `CliprdrStream_Read` copies a server-controlled length into the caller's buffer (heap overflow) · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m37j-jcr2-8gcc
GitHub commit

commit 5e8e987b469b (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit 5e8e987b469b — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/5e8e987b469b60a3bafadf8f5afc40f91c09f458

Vendor Advisories for CVE-2026-68579(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp22.10.0+dfsg1-1 ... 2.9.0+dfsg1-1~bpo11+1 (32 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp22.10.0+dfsg1-1 ... 2.11.7+dfsg1-6~deb12u1 (13 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp33.15.0+dfsg-2.1 ... 3.32.1+dfsg-1~bpo13+1 (49 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp33.15.0+dfsg-2.1 ... 3.30.0+dfsg-1~bpo13+1 (39 versions)
  • every version up to 3.30.0+dfsg-1: fixed in 3.30.0+dfsg-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 64× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 495 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 395 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 12:55 UTCEchelonGraph re-scored
  2. 2026-11-13 12:55 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  3. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  4. 2026-11-12 15:17 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  5. 2026-11-11 17:38 UTCEchelonGraph re-scored
  6. 2026-11-11 17:38 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  7. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-11-10 19:59 UTCEchelonGraph re-scored
  9. 2026-11-10 19:59 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  10. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-11-09 22:17 UTCEchelonGraph re-scored
  12. 2026-11-09 22:17 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  13. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-11-09 00:35 UTCEchelonGraph re-scored
  15. 2026-11-09 00:35 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  16. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-11-08 02:57 UTCEchelonGraph re-scored
  18. 2026-11-08 02:57 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  19. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-11-07 05:18 UTCEchelonGraph re-scored
  21. 2026-11-07 05:18 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  22. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-11-06 15:55 UTCOSV refresh
  24. 2026-11-06 07:40 UTCEchelonGraph re-scored
  25. 2026-11-06 07:40 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
Show 75 more
  1. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-11-05 10:02 UTCEchelonGraph re-scored
  3. 2026-11-05 10:02 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  4. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  5. 2026-11-04 12:24 UTCEchelonGraph re-scored
  6. 2026-11-04 12:24 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  7. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-11-03 14:45 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  9. 2026-11-02 16:49 UTCEchelonGraph re-scored
  10. 2026-11-02 16:49 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  11. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-11-01 18:58 UTCEchelonGraph re-scored
  13. 2026-11-01 18:58 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  14. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-31 21:19 UTCEchelonGraph re-scored
  16. 2026-10-31 21:19 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  17. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-10-30 23:41 UTCEchelonGraph re-scored
  19. 2026-10-30 23:41 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  20. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-10-30 02:02 UTCEchelonGraph re-scored
  22. 2026-10-30 02:02 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  23. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-10-29 04:24 UTCEchelonGraph re-scored
  25. 2026-10-29 04:24 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  26. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  27. 2026-10-28 06:41 UTCEchelonGraph re-scored
  28. 2026-10-28 06:41 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  29. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  30. 2026-10-27 09:03 UTCEchelonGraph re-scored
  31. 2026-10-27 09:03 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  32. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  33. 2026-10-26 10:17 UTCEchelonGraph re-scored
  34. 2026-10-26 10:17 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  35. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  36. 2026-10-25 14:09 UTCEchelonGraph re-scored
  37. 2026-10-25 12:39 UTCEchelonGraph re-scored
  38. 2026-10-25 12:39 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  39. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  40. 2026-10-24 14:58 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  41. 2026-10-23 17:20 UTCEchelonGraph re-scored
  42. 2026-10-23 17:20 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  43. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  44. 2026-10-22 19:41 UTCEchelonGraph re-scored
  45. 2026-10-22 19:41 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  46. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  47. 2026-10-21 22:02 UTCEchelonGraph re-scored
  48. 2026-10-21 22:02 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  49. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  50. 2026-10-21 00:00 UTCEchelonGraph re-scored
  51. 2026-10-21 00:00 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  52. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  53. 2026-10-20 02:14 UTCEchelonGraph re-scored
  54. 2026-10-20 02:13 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  55. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  56. 2026-10-19 01:32 UTCEchelonGraph re-scored
  57. 2026-10-19 01:32 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  58. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  59. 2026-10-18 03:50 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  60. 2026-10-18 03:19 UTCEchelonGraph re-scored
  61. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  62. 2026-10-17 06:11 UTCEchelonGraph re-scored
  63. 2026-10-17 06:10 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  64. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  65. 2026-10-16 07:16 UTCEchelonGraph re-scored
  66. 2026-10-16 07:16 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  67. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  68. 2026-10-15 06:10 UTCEchelonGraph re-scored
  69. 2026-10-15 06:10 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  70. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  71. 2026-10-14 01:47 UTCEchelonGraph re-scored
  72. 2026-10-14 01:47 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6
  73. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  74. 2026-10-12 21:58 UTCEchelonGraph re-scored
  75. 2026-10-12 21:58 UTCGHSA enrichmentGHSA-m4j8-6wj9-56fg · GitHub severity HIGH · GitHub CVSS 9.6

Frequently asked(5)

What is CVE-2026-68579?
CVE-2026-68579 is a critical-severity vulnerability; its CVE record was published on August 2, 2026. FreeRDP before 3.30.0 (<= 3.29.0) contains a heap-based buffer overflow in the Windows clipboard client's CliprdrStream_Read function (client/Windows/wf_cliprdr.c). When an OLE paste consumer (e.g. explorer.exe) calls IStream::Read with a fixed-size buffer of cb bytes, CliprdrStream_Read requests…
When was CVE-2026-68579 made public?
CVE-2026-68579 was made public on July 20, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 2, 2026. EchelonGraph's copy of the record carries a last-modified date of September 29, 2026; the record at its source may have been updated since.
Is CVE-2026-68579 actively exploited?
CVE-2026-68579 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-68579?
CVE-2026-68579 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-68579?
A fix for CVE-2026-68579 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-68579 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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