CVE-2026-45700

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 60% 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, nvd
Trending — 4 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
39.7%
KEV
Not listed

Published

May 29, 2026

Last Modified

July 15, 2026

Advisory Details (7)

Auto-updated Jul 16, 2026
🔬 Proof of concept available. Patch available. Sources: github, redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 6",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45700.json
github Patch Available🟡 PoC Available

Heap-buffer-overflow write in planar bitmap decoder · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mpxh-8fq3-x8mh
redhat Patch Available

2483470 – (CVE-2026-45700) CVE-2026-45700 freerdp: FreeRDP: Out-of-bounds write in planar bitmap decoder allows arbitrary code execution

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2483470
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-45700
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:38501
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:37207
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:36203

Vendor Advisories for CVE-2026-45700(2)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwinpr-utils (2.6.1+dfsg1-3ubuntu2.11) @ jammy2026-07-16ubuntu
redhatfreerdp-2:2.11.7-10.el8_102026-07-13redhat
redhatfreerdp-2:2.11.7-7.el9_8.42026-07-09redhat
redhatfreerdp-2:3.10.3-12.el10_2.62026-07-07redhat

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

(2)

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 14× in last 7d / 73× 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 115 total refreshes for this CVE.

  1. 2026-07-20 17:08 UTCEPSS rescore
  2. 2026-07-19 14:31 UTCEPSS rescore
  3. 2026-07-19 02:29 UTCEPSS rescore
  4. 2026-07-18 10:04 UTCEPSS rescore
  5. 2026-07-16 17:03 UTCEPSS rescore
  6. 2026-07-16 10:00 UTCVendor advisory
  7. 2026-07-16 01:49 UTCVendor advisory
  8. 2026-07-15 16:57 UTCEPSS rescore
  9. 2026-07-15 02:26 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  10. 2026-07-15 02:00 UTCEPSS rescore
  11. 2026-07-15 01:21 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  12. 2026-07-14 21:56 UTCVendor advisory
  13. 2026-07-14 17:35 UTCVendor advisory
  14. 2026-07-14 13:55 UTCVendor advisory
  15. 2026-07-13 22:30 UTCEPSS rescore
  16. 2026-07-13 14:08 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  17. 2026-07-13 12:52 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  18. 2026-07-13 06:13 UTCEPSS rescore
  19. 2026-07-12 05:46 UTCEPSS rescore
  20. 2026-07-12 00:56 UTCVendor advisory
  21. 2026-07-11 21:04 UTCVendor advisory
  22. 2026-07-11 17:23 UTCVendor advisory
  23. 2026-07-11 08:27 UTCEPSS rescore
  24. 2026-07-10 12:26 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  25. 2026-07-10 12:12 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
Show 75 more
  1. 2026-07-09 19:10 UTCEPSS rescore
  2. 2026-07-08 22:42 UTCVendor advisory
  3. 2026-07-08 17:17 UTCVendor advisory
  4. 2026-07-08 15:16 UTCEPSS rescore
  5. 2026-07-08 14:36 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  6. 2026-07-08 12:47 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  7. 2026-07-07 13:46 UTCEPSS rescore
  8. 2026-07-06 16:27 UTCEPSS rescore
  9. 2026-07-06 02:23 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-02 23:01 UTCVendor advisory
  13. 2026-07-02 19:00 UTCVendor advisory
  14. 2026-07-02 12:49 UTCVendor advisory
  15. 2026-07-02 03:48 UTCVendor advisory
  16. 2026-07-01 20:25 UTCVendor advisory
  17. 2026-07-01 16:43 UTCVendor advisory
  18. 2026-07-01 15:07 UTCEPSS rescore
  19. 2026-07-01 12:23 UTCVendor advisory
  20. 2026-07-01 08:37 UTCVendor advisory
  21. 2026-07-01 01:28 UTCEG score recompute▲ 2.10
  22. 2026-07-01 01:28 UTCVendor advisory
  23. 2026-06-30 23:22 UTCEPSS rescore
  24. 2026-06-30 04:33 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  25. 2026-06-30 00:53 UTCVendor advisory
  26. 2026-06-29 14:06 UTCEPSS rescore
  27. 2026-06-29 14:06 UTCEPSS rescore
  28. 2026-06-29 12:30 UTCVendor advisory
  29. 2026-06-28 15:57 UTCVendor advisory
  30. 2026-06-28 14:07 UTCEPSS rescore
  31. 2026-06-28 04:56 UTCEPSS rescore
  32. 2026-06-28 04:56 UTCEPSS rescore
  33. 2026-06-27 16:13 UTCVendor advisory
  34. 2026-06-27 04:12 UTCVendor advisory
  35. 2026-06-27 03:08 UTCEPSS rescore
  36. 2026-06-26 16:11 UTCVendor advisory
  37. 2026-06-26 02:39 UTCVendor advisory
  38. 2026-06-25 14:49 UTCVendor advisory
  39. 2026-06-25 13:49 UTCEPSS rescore
  40. 2026-06-25 03:00 UTCVendor advisory
  41. 2026-06-24 15:11 UTCVendor advisory
  42. 2026-06-24 14:05 UTCEPSS rescore
  43. 2026-06-23 21:33 UTCEPSS rescore
  44. 2026-06-23 21:33 UTCEPSS rescore
  45. 2026-06-22 14:25 UTCEPSS rescore
  46. 2026-06-22 14:25 UTCEPSS rescore
  47. 2026-06-21 14:56 UTCEPSS rescore
  48. 2026-06-21 14:56 UTCEPSS rescore
  49. 2026-06-21 01:59 UTCEPSS rescore
  50. 2026-06-21 01:59 UTCEPSS rescore
  51. 2026-06-19 19:26 UTCEPSS rescore
  52. 2026-06-19 19:26 UTCEPSS rescore
  53. 2026-06-18 22:21 UTCVendor advisory
  54. 2026-06-18 17:52 UTCEPSS rescore
  55. 2026-06-18 17:52 UTCEPSS rescore
  56. 2026-06-18 02:54 UTCVendor advisory
  57. 2026-06-17 17:53 UTCEPSS rescore
  58. 2026-06-17 15:06 UTCVendor advisory
  59. 2026-06-17 03:18 UTCVendor advisory
  60. 2026-06-16 17:52 UTCEPSS rescore
  61. 2026-06-16 15:30 UTCVendor advisory
  62. 2026-06-15 17:49 UTCEPSS rescore
  63. 2026-06-13 23:00 UTCEPSS rescore
  64. 2026-06-12 23:12 UTCEPSS rescore
  65. 2026-06-12 23:12 UTCEPSS rescore
  66. 2026-06-11 14:00 UTCEPSS rescore
  67. 2026-06-10 22:18 UTCEPSS rescore
  68. 2026-06-10 13:22 UTCEPSS rescore
  69. 2026-06-10 13:22 UTCEPSS rescore
  70. 2026-06-08 14:17 UTCEPSS rescore
  71. 2026-06-08 14:17 UTCEPSS rescore
  72. 2026-06-07 15:25 UTCEPSS rescore
  73. 2026-06-07 15:25 UTCEPSS rescore
  74. 2026-06-06 13:47 UTCEPSS rescore
  75. 2026-06-06 13:47 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-45700?
CVE-2026-45700 is a critical vulnerability published on May 29, 2026. FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdpbitmapdecompressplanar() validates the X destination coordinate nXDst against the…
When was CVE-2026-45700 disclosed?
CVE-2026-45700 was first published in the National Vulnerability Database on May 29, 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-2026-45700 actively exploited?
CVE-2026-45700 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 39.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45700?
CVE-2026-45700 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-45700?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45700, 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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