CVE-2026-33984

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. 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: epss, secondary
7.5EG
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: None knownExposed: 0

A fix is available — apply it.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.

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 computed
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

March 30, 2026

Last Modified

July 15, 2026

Advisory Details (10)

Auto-updated Jul 7, 2026
Patch available. Sources: redhat, github_commit, github.
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP So

https://access.redhat.com/errata/RHSA-2026:12388
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Serv

https://access.redhat.com/errata/RHSA-2026:12359
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.2 Advanced Update Support.

https://access.redhat.com/errata/RHSA-2026:11651
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support

https://access.redhat.com/errata/RHSA-2026:11649
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:11336
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:11333
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:11332
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:10709
github Patch Available

ClearCodec resize_vbar_entry() Heap OOB Write · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8469-2xcx-frf6
github_commit

commit dc7fdb165095 (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit dc7fdb165095 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/dc7fdb165095139be779a4000199bc1706b06ad5

Vendor Advisories for CVE-2026-33984(5)

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-2:2.11.7-7.el9_8.12026-05-19redhat
redhatfreerdp-2:3.10.3-12.el10_2.22026-05-19redhat
redhatfreerdp-2:2.2.0-12.el8_8.62026-04-30redhat
redhatfreerdp-2:2.2.0-7.el8_6.62026-04-30redhat
redhatfreerdp-2:2.2.0-13.el8_42026-04-29redhat
redhatfreerdp-2:2.0.0-46.rc4.el8_2.112026-04-29redhat
redhatfreerdp-2:2.4.1-3.el9_0.52026-04-28redhat
redhatfreerdp-2:2.4.1-6.el9_2.72026-04-28redhat
redhatfreerdp-2:3.10.3-3.el10_0.62026-04-28redhat
redhatfreerdp-2:2.11.2-1.el9_4.62026-04-27redhat
redhatfreerdp-2:2.11.7-1.el9_6.82026-04-22redhat
redhatfreerdp-2:2.11.7-7.el8_102026-04-20redhat
redhatfreerdp-2:2.11.7-1.el9_7.62026-04-16redhat
redhatfreerdp-2:3.10.3-5.el10_1.62026-04-16redhat

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.

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, 3.15.0+dfsg-2.1+deb13u13.15.0+dfsg-2.1+deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
freerdp33.15.0+dfsg-2.1 ... 3.24.2+dfsg-1~bpo13+1 (25 versions)3.24.2+dfsg-1—

Weakness Classification(2)

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

Additional Vendor Advisories

(10)

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 7× in last 7d / 50× 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. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 14:17 UTCEPSS rescore
  3. 2026-08-23 00:19 UTCEPSS rescore
  4. 2026-08-21 23:49 UTCEPSS rescore
  5. 2026-08-20 22:55 UTCEPSS rescore
  6. 2026-08-20 22:55 UTCEPSS rescore
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 09:43 UTCEG score recompute
  12. 2026-08-16 09:43 UTCVendor advisory
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 19:07 UTCVendor advisory
  16. 2026-08-14 06:07 UTCEG score recompute
  17. 2026-08-14 06:07 UTCVendor advisory
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-12 20:28 UTCEG score recompute
  20. 2026-08-12 20:28 UTCVendor advisory
  21. 2026-08-12 13:50 UTCEPSS rescore
  22. 2026-08-11 20:39 UTCEG score recompute
  23. 2026-08-11 20:39 UTCVendor advisory
  24. 2026-08-11 03:40 UTCEG score recompute
  25. 2026-08-11 03:40 UTCVendor advisory
Show 62 more
  1. 2026-08-11 00:00 UTCEPSS rescore
  2. 2026-08-10 05:52 UTCVendor advisory
  3. 2026-08-09 17:46 UTCEG score recompute
  4. 2026-08-09 17:46 UTCVendor advisory
  5. 2026-08-09 13:46 UTCEPSS rescore
  6. 2026-08-09 05:42 UTCVendor advisory
  7. 2026-08-08 03:54 UTCEG score recompute
  8. 2026-08-08 03:54 UTCVendor advisory
  9. 2026-08-07 15:50 UTCVendor advisory
  10. 2026-08-06 18:14 UTCEG score recompute
  11. 2026-08-06 18:14 UTCVendor advisory
  12. 2026-08-06 13:46 UTCEPSS rescore
  13. 2026-08-06 00:39 UTCEG score recompute
  14. 2026-08-06 00:39 UTCVendor advisory
  15. 2026-08-05 19:17 UTCEPSS rescore
  16. 2026-08-04 15:10 UTCEPSS rescore
  17. 2026-08-04 10:38 UTCEPSS rescore
  18. 2026-08-03 22:58 UTCVendor advisory
  19. 2026-08-02 15:01 UTCEG score recompute
  20. 2026-08-02 15:01 UTCVendor advisory
  21. 2026-08-02 02:27 UTCEPSS rescore
  22. 2026-08-01 04:16 UTCEPSS rescore
  23. 2026-07-30 16:28 UTCEPSS rescore
  24. 2026-07-30 01:30 UTCEPSS rescore
  25. 2026-07-27 14:13 UTCEPSS rescore
  26. 2026-07-26 14:54 UTCEPSS rescore
  27. 2026-07-26 14:54 UTCEPSS rescore
  28. 2026-07-25 14:18 UTCEPSS rescore
  29. 2026-07-25 14:18 UTCEPSS rescore
  30. 2026-07-24 14:17 UTCEPSS rescore
  31. 2026-07-24 14:17 UTCEPSS rescore
  32. 2026-07-23 03:09 UTCEG score recompute
  33. 2026-07-22 14:08 UTCEPSS rescore
  34. 2026-07-21 15:24 UTCEPSS rescore
  35. 2026-07-20 17:08 UTCEPSS rescore
  36. 2026-07-19 14:31 UTCEPSS rescore
  37. 2026-07-19 02:29 UTCEPSS rescore
  38. 2026-07-18 10:04 UTCEPSS rescore
  39. 2026-07-18 06:59 UTCOSV refresh
  40. 2026-07-16 17:03 UTCEPSS rescore
  41. 2026-07-15 16:57 UTCEPSS rescore
  42. 2026-07-15 16:57 UTCEPSS rescore
  43. 2026-07-15 02:00 UTCEPSS rescore
  44. 2026-07-13 22:30 UTCEPSS rescore
  45. 2026-07-13 06:13 UTCEPSS rescore
  46. 2026-07-13 06:13 UTCEPSS rescore
  47. 2026-07-12 05:46 UTCEPSS rescore
  48. 2026-07-11 08:27 UTCEPSS rescore
  49. 2026-07-09 19:10 UTCEPSS rescore
  50. 2026-07-08 15:15 UTCEPSS rescore
  51. 2026-07-07 13:46 UTCEPSS rescore
  52. 2026-07-06 16:27 UTCEPSS rescore
  53. 2026-07-06 16:27 UTCEPSS rescore
  54. 2026-07-06 02:23 UTCEPSS rescore
  55. 2026-07-06 02:23 UTCEPSS rescore
  56. 2026-07-05 02:30 UTCEPSS rescore
  57. 2026-07-04 06:31 UTCEPSS rescore
  58. 2026-07-01 15:06 UTCEPSS rescore
  59. 2026-06-30 23:22 UTCEPSS rescore
  60. 2026-06-30 04:36 UTCEG score recompute
  61. 2026-06-30 04:36 UTCVendor advisory
  62. 2026-06-30 04:32 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-33984?
CVE-2026-33984 is a high vulnerability published on March 30, 2026. FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resizevbarentry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpralignedrecalloc() call. If realloc fails, size is inflated while pixels still points to the old,…
When was CVE-2026-33984 disclosed?
CVE-2026-33984 was first published in the National Vulnerability Database on March 30, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33984 actively exploited?
CVE-2026-33984 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 67.4% of all scored CVEs.
What is the CVSS score of CVE-2026-33984?
CVE-2026-33984 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-33984?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33984, 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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