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 — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 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)
EG Risk
60(Track*)
EG Risk 60/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
40%
KEV
Not listed

Published

May 29, 2026

Last Modified

July 22, 2026

Advisory Details (7)

Auto-updated Jul 22, 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 11× in last 7d / 68× 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 126 total refreshes for this CVE.

  1. 2026-07-27 14:13 UTCEPSS rescore
  2. 2026-07-27 09:03 UTCEG score recompute
  3. 2026-07-27 09:03 UTCVendor advisory
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-25 14:18 UTCEPSS rescore
  7. 2026-07-24 14:17 UTCEPSS rescore
  8. 2026-07-23 14:18 UTCEPSS rescore
  9. 2026-07-23 03:16 UTCEG score recompute
  10. 2026-07-22 14:08 UTCEPSS rescore
  11. 2026-07-21 15:24 UTCEPSS rescore
  12. 2026-07-20 17:08 UTCEPSS rescore
  13. 2026-07-19 14:31 UTCEPSS rescore
  14. 2026-07-19 02:29 UTCEPSS rescore
  15. 2026-07-18 10:04 UTCEPSS rescore
  16. 2026-07-16 17:03 UTCEPSS rescore
  17. 2026-07-16 10:00 UTCVendor advisory
  18. 2026-07-16 01:49 UTCVendor advisory
  19. 2026-07-15 16:57 UTCEPSS rescore
  20. 2026-07-15 02:26 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  21. 2026-07-15 02:00 UTCEPSS rescore
  22. 2026-07-15 01:21 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  23. 2026-07-14 21:56 UTCVendor advisory
  24. 2026-07-14 17:35 UTCVendor advisory
  25. 2026-07-14 13:55 UTCVendor advisory
Show 75 more
  1. 2026-07-13 22:30 UTCEPSS rescore
  2. 2026-07-13 14:08 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  3. 2026-07-13 12:52 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-12 00:56 UTCVendor advisory
  7. 2026-07-11 21:04 UTCVendor advisory
  8. 2026-07-11 17:23 UTCVendor advisory
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-10 12:26 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  11. 2026-07-10 12:12 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-08 22:42 UTCVendor advisory
  14. 2026-07-08 17:17 UTCVendor advisory
  15. 2026-07-08 15:16 UTCEPSS rescore
  16. 2026-07-08 14:36 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  17. 2026-07-08 12:47 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  18. 2026-07-07 13:46 UTCEPSS rescore
  19. 2026-07-06 16:27 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 06:31 UTCEPSS rescore
  23. 2026-07-02 23:01 UTCVendor advisory
  24. 2026-07-02 19:00 UTCVendor advisory
  25. 2026-07-02 12:49 UTCVendor advisory
  26. 2026-07-02 03:48 UTCVendor advisory
  27. 2026-07-01 20:25 UTCVendor advisory
  28. 2026-07-01 16:43 UTCVendor advisory
  29. 2026-07-01 15:07 UTCEPSS rescore
  30. 2026-07-01 12:23 UTCVendor advisory
  31. 2026-07-01 08:37 UTCVendor advisory
  32. 2026-07-01 01:28 UTCEG score recompute▲ 2.10
  33. 2026-07-01 01:28 UTCVendor advisory
  34. 2026-06-30 23:22 UTCEPSS rescore
  35. 2026-06-30 04:33 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  36. 2026-06-30 00:53 UTCVendor advisory
  37. 2026-06-29 14:06 UTCEPSS rescore
  38. 2026-06-29 14:06 UTCEPSS rescore
  39. 2026-06-29 12:30 UTCVendor advisory
  40. 2026-06-28 15:57 UTCVendor advisory
  41. 2026-06-28 14:07 UTCEPSS rescore
  42. 2026-06-28 04:56 UTCEPSS rescore
  43. 2026-06-28 04:56 UTCEPSS rescore
  44. 2026-06-27 16:13 UTCVendor advisory
  45. 2026-06-27 04:12 UTCVendor advisory
  46. 2026-06-27 03:08 UTCEPSS rescore
  47. 2026-06-26 16:11 UTCVendor advisory
  48. 2026-06-26 02:39 UTCVendor advisory
  49. 2026-06-25 14:49 UTCVendor advisory
  50. 2026-06-25 13:49 UTCEPSS rescore
  51. 2026-06-25 03:00 UTCVendor advisory
  52. 2026-06-24 15:11 UTCVendor advisory
  53. 2026-06-24 14:05 UTCEPSS rescore
  54. 2026-06-23 21:33 UTCEPSS rescore
  55. 2026-06-23 21:33 UTCEPSS rescore
  56. 2026-06-22 14:25 UTCEPSS rescore
  57. 2026-06-22 14:25 UTCEPSS rescore
  58. 2026-06-21 14:56 UTCEPSS rescore
  59. 2026-06-21 14:56 UTCEPSS rescore
  60. 2026-06-21 01:59 UTCEPSS rescore
  61. 2026-06-21 01:59 UTCEPSS rescore
  62. 2026-06-19 19:26 UTCEPSS rescore
  63. 2026-06-19 19:26 UTCEPSS rescore
  64. 2026-06-18 22:21 UTCVendor advisory
  65. 2026-06-18 17:52 UTCEPSS rescore
  66. 2026-06-18 17:52 UTCEPSS rescore
  67. 2026-06-18 02:54 UTCVendor advisory
  68. 2026-06-17 17:53 UTCEPSS rescore
  69. 2026-06-17 15:06 UTCVendor advisory
  70. 2026-06-17 03:18 UTCVendor advisory
  71. 2026-06-16 17:52 UTCEPSS rescore
  72. 2026-06-16 15:30 UTCVendor advisory
  73. 2026-06-15 17:49 UTCEPSS rescore
  74. 2026-06-13 23:00 UTCEPSS rescore
  75. 2026-06-12 23:12 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 22, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 60.0% of all scored CVEs.
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

Explore the affected products and dependency analysis for CVE-2026-45700

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