CVE-2026-49842

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 62% 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
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: None knownExposed: 0

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

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, mod_verto's WebSocket frame loop intercepts a #-prefixed speed-test protocol (#SPU / #SPB / #SPE) before any authentication check. The declared payload size in #SPU was parsed with atoi() and only rejected non-positive values, so an unauthenticated peer could request up to INT_MAX bytes. The server then wrote roughly size * 10 bytes back during the download phase, on the order of 20 GB per request, yielding strong outbound bandwidth amplification from a short request. This issue has been patched in version 1.11.1.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jun 10, 2026
Patch available. Sources: github, github_release.
github Patch Available

Pre-authentication bandwidth amplification via `mod_verto` speed-test frames. · Advisory · signalwire/freeswitch · GitHub

https://github.com/signalwire/freeswitch/security/advisories/GHSA-p3gx-p2w7-wp35
github_release Patch Available

FreeSWITCH v1.11.1 Release

Patch available: signalwire/freeswitch v1.11.1

https://github.com/signalwire/freeswitch/releases/tag/v1.11.1

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 30× 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 131 total refreshes for this CVE.

  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-14 04:36 UTCEG score recompute
  3. 2026-09-13 16:47 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
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  20. 2026-08-25 00:50 UTCEG score recompute
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  24. 2026-08-21 23:49 UTCEPSS rescore
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  1. 2026-08-20 22:55 UTCEPSS rescore
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  3. 2026-08-19 17:04 UTCEPSS rescore
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  6. 2026-08-17 00:45 UTCEG score recompute
  7. 2026-08-16 14:56 UTCEPSS rescore
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  24. 2026-08-06 22:06 UTCEG score recompute
  25. 2026-08-06 13:47 UTCEPSS rescore
  26. 2026-08-05 20:11 UTCEG score recompute
  27. 2026-08-05 19:17 UTCEPSS rescore
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  35. 2026-08-01 10:23 UTCEG score recompute
  36. 2026-08-01 04:16 UTCEPSS rescore
  37. 2026-07-31 01:19 UTCEG score recompute
  38. 2026-07-30 16:28 UTCEPSS rescore
  39. 2026-07-30 10:28 UTCEG score recompute
  40. 2026-07-30 01:30 UTCEPSS rescore
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  47. 2026-07-25 14:18 UTCEPSS rescore
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  49. 2026-07-23 14:18 UTCEPSS rescore
  50. 2026-07-23 03:18 UTCEG score recompute
  51. 2026-07-22 14:08 UTCEPSS rescore
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  66. 2026-07-09 19:10 UTCEPSS rescore
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  73. 2026-07-01 15:07 UTCEPSS rescore
  74. 2026-06-30 23:22 UTCEPSS rescore
  75. 2026-06-29 14:06 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-49842?
CVE-2026-49842 is a high vulnerability published on June 9, 2026. FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, modverto's WebSocket frame loop intercepts a #-prefixed speed-test protocol (#SPU / #SPB /…
When was CVE-2026-49842 disclosed?
CVE-2026-49842 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49842 actively exploited?
CVE-2026-49842 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 62.0% of all scored CVEs.
What is the CVSS score of CVE-2026-49842?
CVE-2026-49842 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-49842?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49842, 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.

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