CVE-2026-57156

CRITICALNVD 9.88.6▼
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 59% 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
Trending — 4 sources updated this week
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

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

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit builds, FreeRDP clients contain an integer overflow in update_read_delta_points in libfreerdp/core/orders.c when multiplying an attacker-controlled point count by sizeof(DELTA_POINT), allowing a malicious RDP peer to allocate an undersized heap buffer and then write beyond it during initialization. This issue is fixed in version 3.28.0.

CVSS v3
9.8
EG Score
8.6(medium)
EPSS
41.0%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated Jul 14, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available🟡 PoC Available

Integer overflow leading to heap buffer overflow in FreeRDP Orders Delta Points parsing · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v5wf-j8j4-77h7
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_pr

[core,orders] fix inverted overflow guard in update_read_delta_points

Fix merged in FreeRDP/FreeRDP PR #12938 on 2026-06-22 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/pull/12938
github_commit

commit 487f35daccb3 (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit 487f35daccb3 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/487f35daccb36a6224e530dcd8fa60850825f823

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 13× 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. 2026-07-14 01:43 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  2. 2026-07-13 22:31 UTCEPSS rescore
  3. 2026-07-13 20:43 UTCEG score recompute
  4. 2026-07-13 08:36 UTCEG score recompute
  5. 2026-07-13 06:13 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-12 20:30 UTCEG score recompute
  8. 2026-07-12 08:23 UTCEG score recompute
  9. 2026-07-12 05:46 UTCEPSS rescore
  10. 2026-07-11 20:17 UTCEG score recompute
  11. 2026-07-11 08:10 UTCEG score recompute
  12. 2026-07-10 20:03 UTCEG score recompute
  13. 2026-07-10 20:02 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57156?
CVE-2026-57156 is a critical vulnerability published on July 10, 2026. FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit builds, FreeRDP clients contain an integer overflow in updatereaddeltapoints in libfreerdp/core/orders.c when multiplying an attacker-controlled point count by sizeof(DELTAPOINT), allowing a malicious RDP…
When was CVE-2026-57156 disclosed?
CVE-2026-57156 was first published in the National Vulnerability Database on July 10, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57156 actively exploited?
CVE-2026-57156 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57156?
CVE-2026-57156 has a CVSS v3 base score of 9.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.6.
How do I remediate CVE-2026-57156?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57156, 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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