CVE-2026-68579

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

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, ghsa, secondary
Trending — 3 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
9.6(high)
EG Risk
58(Track)
EG Risk 58/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

August 2, 2026

Last Modified

August 3, 2026

Advisory Details (3)

Auto-updated Aug 15, 2026
Patch available. Sources: github_commit, github.
generic

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 Patch Available

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 rangeFixed inDependents
freerdp22.10.0+dfsg1-1 ... 2.9.0+dfsg1-1~bpo11+1 (32 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
freerdp22.10.0+dfsg1-1 ... 2.11.7+dfsg1-6~deb12u1 (13 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
freerdp33.15.0+dfsg-2.1 ... 3.30.0+dfsg-1~bpo13+1 (43 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
freerdp33.15.0+dfsg-2.1 ... 3.30.0+dfsg-1~bpo13+1 (39 versions)3.30.0+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 57× in last 7d / 155× 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.

Showing the most recent 100 of 155 total refreshes for this CVE.

  1. 2026-08-21 06:55 UTCGHSA enrichment
  2. 2026-08-21 02:52 UTCEG score recompute
  3. 2026-08-21 02:51 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 22:52 UTCGHSA enrichment
  6. 2026-08-20 18:54 UTCGHSA enrichment
  7. 2026-08-20 14:55 UTCGHSA enrichment
  8. 2026-08-20 10:55 UTCGHSA enrichment
  9. 2026-08-20 06:56 UTCGHSA enrichment
  10. 2026-08-20 02:58 UTCGHSA enrichment
  11. 2026-08-19 23:00 UTCGHSA enrichment
  12. 2026-08-19 19:01 UTCEG score recompute
  13. 2026-08-19 19:01 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 14:39 UTCGHSA enrichment
  16. 2026-08-19 10:25 UTCGHSA enrichment
  17. 2026-08-19 06:24 UTCGHSA enrichment
  18. 2026-08-19 02:18 UTCGHSA enrichment
  19. 2026-08-18 22:19 UTCGHSA enrichment
  20. 2026-08-18 18:21 UTCEG score recompute
  21. 2026-08-18 18:21 UTCGHSA enrichment
  22. 2026-08-18 13:49 UTCEPSS rescore
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 12:51 UTCGHSA enrichment
  25. 2026-08-18 08:41 UTCGHSA enrichment
Show 75 more
  1. 2026-08-18 04:21 UTCGHSA enrichment
  2. 2026-08-18 00:21 UTCGHSA enrichment
  3. 2026-08-17 20:08 UTCGHSA enrichment
  4. 2026-08-17 16:05 UTCEG score recompute
  5. 2026-08-17 16:05 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 12:07 UTCGHSA enrichment
  8. 2026-08-17 08:08 UTCGHSA enrichment
  9. 2026-08-17 04:10 UTCGHSA enrichment
  10. 2026-08-17 00:12 UTCGHSA enrichment
  11. 2026-08-16 20:14 UTCGHSA enrichment
  12. 2026-08-16 16:15 UTCEG score recompute
  13. 2026-08-16 16:15 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 12:16 UTCGHSA enrichment
  17. 2026-08-16 08:18 UTCGHSA enrichment
  18. 2026-08-16 04:20 UTCEG score recompute
  19. 2026-08-16 04:20 UTCGHSA enrichment
  20. 2026-08-16 00:22 UTCGHSA enrichment
  21. 2026-08-15 20:24 UTCGHSA enrichment
  22. 2026-08-15 16:26 UTCGHSA enrichment
  23. 2026-08-15 12:28 UTCGHSA enrichment
  24. 2026-08-15 08:29 UTCGHSA enrichment
  25. 2026-08-15 04:31 UTCEG score recompute
  26. 2026-08-15 04:31 UTCGHSA enrichment
  27. 2026-08-15 01:30 UTCEPSS rescore
  28. 2026-08-15 00:33 UTCGHSA enrichment
  29. 2026-08-14 20:34 UTCGHSA enrichment
  30. 2026-08-14 16:36 UTCGHSA enrichment
  31. 2026-08-14 12:38 UTCGHSA enrichment
  32. 2026-08-14 08:40 UTCGHSA enrichment
  33. 2026-08-14 04:42 UTCGHSA enrichment
  34. 2026-08-14 00:43 UTCEG score recompute
  35. 2026-08-14 00:43 UTCGHSA enrichment
  36. 2026-08-13 22:00 UTCEPSS rescore
  37. 2026-08-13 20:44 UTCGHSA enrichment
  38. 2026-08-13 16:46 UTCGHSA enrichment
  39. 2026-08-13 12:47 UTCGHSA enrichment
  40. 2026-08-13 08:48 UTCGHSA enrichment
  41. 2026-08-13 04:50 UTCGHSA enrichment
  42. 2026-08-13 00:52 UTCGHSA enrichment
  43. 2026-08-12 20:54 UTCGHSA enrichment
  44. 2026-08-12 16:56 UTCEG score recompute
  45. 2026-08-12 16:56 UTCGHSA enrichment
  46. 2026-08-12 13:51 UTCEPSS rescore
  47. 2026-08-12 12:58 UTCGHSA enrichment
  48. 2026-08-12 08:59 UTCGHSA enrichment
  49. 2026-08-12 05:01 UTCGHSA enrichment
  50. 2026-08-12 01:03 UTCGHSA enrichment
  51. 2026-08-11 21:05 UTCGHSA enrichment
  52. 2026-08-11 17:05 UTCEG score recompute
  53. 2026-08-11 17:05 UTCGHSA enrichment
  54. 2026-08-11 13:05 UTCGHSA enrichment
  55. 2026-08-11 09:07 UTCGHSA enrichment
  56. 2026-08-11 05:09 UTCGHSA enrichment
  57. 2026-08-11 01:11 UTCEG score recompute
  58. 2026-08-11 01:11 UTCGHSA enrichment
  59. 2026-08-11 00:00 UTCEPSS rescore
  60. 2026-08-10 21:13 UTCGHSA enrichment
  61. 2026-08-10 17:15 UTCGHSA enrichment
  62. 2026-08-10 13:16 UTCGHSA enrichment
  63. 2026-08-10 09:18 UTCGHSA enrichment
  64. 2026-08-10 05:20 UTCGHSA enrichment
  65. 2026-08-10 01:22 UTCGHSA enrichment
  66. 2026-08-09 21:24 UTCGHSA enrichment
  67. 2026-08-09 17:26 UTCEG score recompute
  68. 2026-08-09 17:26 UTCGHSA enrichment
  69. 2026-08-09 13:47 UTCEPSS rescore
  70. 2026-08-09 13:28 UTCGHSA enrichment
  71. 2026-08-09 09:29 UTCGHSA enrichment
  72. 2026-08-09 05:31 UTCGHSA enrichment
  73. 2026-08-09 01:33 UTCGHSA enrichment
  74. 2026-08-08 21:35 UTCGHSA enrichment
  75. 2026-08-08 17:37 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-68579?
CVE-2026-68579 is a critical vulnerability 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 CliprdrStreamRead function (client/Windows/wfcliprdr.c). When an OLE paste consumer (e.g. explorer.exe) calls IStream::Read with a fixed-size buffer of cb bytes, CliprdrStreamRead requests file…
When was CVE-2026-68579 disclosed?
CVE-2026-68579 was first published in the National Vulnerability Database on August 2, 2026, with the most recent update on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68579 actively exploited?
CVE-2026-68579 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 80.8% of all scored CVEs.
What is the CVSS score of CVE-2026-68579?
CVE-2026-68579 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-68579?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68579, 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

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