CVE-2026-31884

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 77% 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
Elevated
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: Elevated riskExposed: 0

A fix is available — apply it.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % block_size where block_size = context->common.format.nBlockAlign. The nBlockAlign value comes from the Server Audio Formats PDU on the RDPSND channel. The value 0 is not validated anywhere before reaching the decoder. When nBlockAlign = 0, the modulo operation causes a SIGFPE (floating point exception) crash. This vulnerability is fixed in 3.24.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

March 13, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Aug 2, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Division-by-zero in ADPCM decoders when `nBlockAlign` is 0 · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jp7m-94ww-p56r
github_commit

commit 16df2300e1e3 (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit 16df2300e1e3 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8
github_commit

commit 03b48b3601d8 (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit 03b48b3601d8 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/03b48b3601d867afccac1cdc6081de7a275edce7

Vendor Advisories for CVE-2026-31884(14)

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-0:2.1.1-5.el7_9.92026-05-26redhat
redhatfreerdp-2:3.10.3-3.el10_0.72026-05-26redhat
redhatfreerdp-2:2.2.0-14.el8_42026-05-20redhat
redhatfreerdp-2:2.11.7-7.el9_8.32026-05-19redhat
redhatfreerdp-2:3.10.3-12.el10_2.52026-05-19redhat
redhatfreerdp-2:2.2.0-12.el8_8.82026-05-13redhat
redhatfreerdp-2:2.11.2-1.el9_4.82026-05-13redhat
redhatfreerdp-2:2.11.7-1.el9_6.102026-05-13redhat
redhatfreerdp-2:2.11.7-1.el9_7.72026-05-13redhat
redhatfreerdp-2:2.2.0-7.el8_6.82026-05-13redhat
redhatfreerdp-2:2.4.1-6.el9_2.92026-05-12redhat
redhatfreerdp-2:2.4.1-3.el9_0.72026-05-12redhat
redhatfreerdp-2:2.11.7-9.el8_102026-05-11redhat
redhatfreerdp-2:3.10.3-5.el10_1.82026-05-11redhat

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 ... 3.23.0+dfsg-1~bpo13+1 (21 versions)3.24.0+dfsg-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 5× in last 7d / 31× 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. 2026-09-13 16:47 UTCEPSS rescore
  2. 2026-09-12 15:01 UTCEPSS rescore
  3. 2026-09-11 14:52 UTCEPSS rescore
  4. 2026-09-10 09:34 UTCEPSS rescore
  5. 2026-09-08 22:00 UTCEPSS rescore
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 19:10 UTCOSV refresh
  11. 2026-09-02 14:11 UTCEPSS rescore
  12. 2026-09-01 13:53 UTCEPSS rescore
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-09-01 04:39 UTCEPSS rescore
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-30 01:22 UTCEPSS rescore
  17. 2026-08-28 21:41 UTCEPSS rescore
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-26 14:46 UTCEPSS rescore
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-24 14:17 UTCEPSS rescore
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-20 22:55 UTCEPSS rescore
Show 51 more
  1. 2026-08-19 17:03 UTCEPSS rescore
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-17 13:47 UTCEPSS rescore
  4. 2026-08-16 14:56 UTCEPSS rescore
  5. 2026-08-16 11:41 UTCEG score recompute
  6. 2026-08-16 11:41 UTCVendor advisory
  7. 2026-08-16 02:14 UTCEPSS rescore
  8. 2026-08-15 01:30 UTCEPSS rescore
  9. 2026-08-14 20:04 UTCVendor advisory
  10. 2026-08-14 07:42 UTCEG score recompute
  11. 2026-08-14 07:42 UTCVendor advisory
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-12 22:42 UTCEG score recompute
  14. 2026-08-12 22:42 UTCVendor advisory
  15. 2026-08-12 13:50 UTCEPSS rescore
  16. 2026-08-11 21:42 UTCEG score recompute
  17. 2026-08-11 21:41 UTCVendor advisory
  18. 2026-08-11 04:50 UTCEG score recompute
  19. 2026-08-11 04:50 UTCVendor advisory
  20. 2026-08-11 00:00 UTCEPSS rescore
  21. 2026-08-10 05:54 UTCVendor advisory
  22. 2026-08-09 18:34 UTCEG score recompute
  23. 2026-08-09 18:34 UTCVendor advisory
  24. 2026-08-09 13:46 UTCEPSS rescore
  25. 2026-08-09 07:22 UTCEG score recompute
  26. 2026-08-09 07:22 UTCVendor advisory
  27. 2026-08-08 16:37 UTCEPSS rescore
  28. 2026-08-08 05:13 UTCVendor advisory
  29. 2026-08-07 18:02 UTCEG score recompute
  30. 2026-08-07 18:02 UTCVendor advisory
  31. 2026-08-06 19:48 UTCEG score recompute
  32. 2026-08-06 19:48 UTCVendor advisory
  33. 2026-08-06 13:46 UTCEPSS rescore
  34. 2026-08-06 01:55 UTCEG score recompute
  35. 2026-08-06 01:55 UTCVendor advisory
  36. 2026-08-05 19:17 UTCEPSS rescore
  37. 2026-08-04 15:10 UTCEPSS rescore
  38. 2026-08-04 10:38 UTCEPSS rescore
  39. 2026-08-04 01:11 UTCEG score recompute
  40. 2026-08-04 01:11 UTCVendor advisory
  41. 2026-08-03 10:36 UTCEPSS rescore
  42. 2026-08-02 17:19 UTCEG score recompute▲ 1.00
  43. 2026-08-02 17:19 UTCVendor advisory
  44. 2026-08-02 02:27 UTCEPSS rescore
  45. 2026-08-01 04:16 UTCEPSS rescore
  46. 2026-07-30 16:28 UTCEPSS rescore
  47. 2026-07-30 01:30 UTCEPSS rescore
  48. 2026-07-28 15:36 UTCEPSS rescore
  49. 2026-07-27 12:52 UTCEG score recompute
  50. 2026-07-27 12:52 UTCVendor advisory
  51. 2026-07-27 12:50 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-31884?
CVE-2026-31884 is a high vulnerability published on March 13, 2026. FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, division by zero in MS-ADPCM and IMA-ADPCM decoders when nBlockAlign is 0, leading to a crash. In libfreerdp/codec/dsp.c, both ADPCM decoders use size % blocksize where blocksize = context->common.format.nBlockAlign.…
When was CVE-2026-31884 disclosed?
CVE-2026-31884 was first published in the National Vulnerability Database on March 13, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31884 actively exploited?
CVE-2026-31884 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 77.2% of all scored CVEs.
What is the CVSS score of CVE-2026-31884?
CVE-2026-31884 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-31884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31884, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-31884

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