CVE-2026-57158

CRITICALNVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.7% (51st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated
9.1EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

FreeRDP is a free implementation of the Remote Desktop Protocol. From 3.21.0 before 3.28.0, FreeRDP clients using the GFX pipeline contain an incomplete fix for CVE-2026-23530 in planar_decompress_plane_rle_only in libfreerdp/codec/planar.c, allowing a malicious RDP server to send a truncated RDPGFX_CMDID_WIRETOSURFACE_1 planar payload that reads one byte past the input buffer. This issue is fixed in version 3.28.0.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
72
EG Risk 72/100

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 (value × EchelonGraph’s weight)
Severity91% × 45%
The EG Score, 9.1 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (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
0.7%
EPSS %ILE
51st
KEV
Not listed

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 public PoC (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.

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

July 10, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated Sep 16, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

planar_decompress_plane_rle_only: heap OOB read — incomplete fix for CVE-2026-23530 · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mp3f-59pg-c5pp
GitHub release Patch Available

3.28.0

Patch available: FreeRDP/FreeRDP 3.28.0

https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0
GitHub pull request

[codec,planar] fix range check, abort early

Fix merged in FreeRDP/FreeRDP PR #12952 on 2026-06-23 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/pull/12952
GitHub commit

commit a7e797626fcb (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit a7e797626fcb — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/a7e797626fcb7f1d556ce63febb84f9f4a822731

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuwinpr3-utils (3.30.0+dfsg-0ubuntu0.26.04.1) @ resolute2026-10-01ubuntu

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 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 ... 3.27.1+dfsg-1 (35 versions)
  • every version up to 3.28.0+dfsg-1: fixed in 3.28.0+dfsg-1
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 45× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 100 of 330 refreshes 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 230 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 01:54 UTCEG score recompute
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  3. 2026-10-12 22:10 UTCEG score recompute
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  5. 2026-10-12 15:54 UTCEG score recompute
  6. 2026-10-11 19:37 UTCEG score recompute
  7. 2026-10-11 16:52 UTCEG score recompute
  8. 2026-10-11 14:15 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  20. 2026-10-01 14:58 UTCEG score recompute
  21. 2026-10-01 14:58 UTCVendor advisory
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  23. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  24. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  25. 2026-09-28 13:34 UTCVendor advisory
Show 75 more
  1. 2026-09-28 09:46 UTCEG score recompute
  2. 2026-09-28 09:46 UTCVendor advisory
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  4. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  5. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  6. 2026-09-24 11:09 UTCEG score recompute
  7. 2026-09-24 11:09 UTCVendor advisory
  8. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-09-23 09:32 UTCVendor advisory
  10. 2026-09-23 05:44 UTCEG score recompute
  11. 2026-09-23 05:44 UTCVendor advisory
  12. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-09-18 10:08 UTCVendor advisory
  15. 2026-09-18 05:17 UTCEG score recompute
  16. 2026-09-18 05:17 UTCVendor advisory
  17. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-09-14 11:09 UTCVendor advisory
  22. 2026-09-14 07:15 UTCVendor advisory
  23. 2026-09-14 03:26 UTCVendor advisory
  24. 2026-09-13 23:39 UTCEG score recompute
  25. 2026-09-13 23:39 UTCVendor advisory
  26. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  27. 2026-09-13 16:41 UTCVendor advisory
  28. 2026-09-13 11:59 UTCVendor advisory
  29. 2026-09-13 08:11 UTCEG score recompute
  30. 2026-09-13 08:11 UTCVendor advisory
  31. 2026-09-12 13:32 UTCVendor advisory
  32. 2026-09-12 02:50 UTCEG score recompute
  33. 2026-09-12 02:50 UTCVendor advisory
  34. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  35. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  36. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  37. 2026-09-08 02:46 UTCEG score recompute
  38. 2026-09-08 02:46 UTCVendor advisory
  39. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  40. 2026-09-06 13:57 UTCEG score recompute
  41. 2026-09-06 13:57 UTCVendor advisory
  42. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  43. 2026-09-06 01:46 UTCVendor advisory
  44. 2026-09-05 21:41 UTCEG score recompute
  45. 2026-09-05 21:41 UTCVendor advisory
  46. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  47. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  48. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  49. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  50. 2026-08-31 00:09 UTCVendor advisory
  51. 2026-08-30 20:21 UTCEG score recompute
  52. 2026-08-30 20:21 UTCVendor advisory
  53. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  54. 2026-08-30 16:34 UTCVendor advisory
  55. 2026-08-30 11:11 UTCVendor advisory
  56. 2026-08-30 06:15 UTCEG score recompute
  57. 2026-08-30 06:15 UTCVendor advisory
  58. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  59. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  60. 2026-08-28 02:38 UTCVendor advisory
  61. 2026-08-27 21:40 UTCEG score recompute
  62. 2026-08-27 21:40 UTCVendor advisory
  63. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  64. 2026-08-27 00:46 UTCEG score recompute
  65. 2026-08-27 00:46 UTCVendor advisory
  66. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  67. 2026-08-26 12:53 UTCVendor advisory
  68. 2026-08-26 08:16 UTCVendor advisory
  69. 2026-08-26 03:33 UTCVendor advisory
  70. 2026-08-25 15:52 UTCEG score recompute
  71. 2026-08-25 15:52 UTCVendor advisory
  72. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  73. 2026-08-25 11:35 UTCVendor advisory
  74. 2026-08-25 07:40 UTCVendor advisory
  75. 2026-08-25 03:48 UTCVendor advisory

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Frequently asked(5)

What is CVE-2026-57158?
CVE-2026-57158 is a critical-severity vulnerability; its CVE record was published on July 10, 2026. FreeRDP is a free implementation of the Remote Desktop Protocol. From 3.21.0 before 3.28.0, FreeRDP clients using the GFX pipeline contain an incomplete fix for CVE-2026-23530 in planardecompressplanerleonly in libfreerdp/codec/planar.c, allowing a malicious RDP server to send a truncated…
When was the CVE record for CVE-2026-57158 published?
The CVE record for CVE-2026-57158 was published on July 10, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-57158 actively exploited?
CVE-2026-57158 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57158?
CVE-2026-57158 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-57158?
A fix for CVE-2026-57158 is available: update to the fixed version the vendor names in its advisory.

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