CVE-2020-5403Patch(broadcom / reactor_netty)

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch broadcom reactor_netty systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connection to be closed prematurely instead of producing a 400 response.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-20CWE-755

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • reactor_netty

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
reactor_netty

2 versions affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-04: 1Patch / Workaround · 2026-09-04: 1Technical Details · 2026-09-04: 109-04
Signal classification1 categories
Patch
1100.0%
Full discourse1 post
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH Severity CVE-2020-5403 | CVSS 7.5 Reactor Netty HttpServer v0.9.3-0.9.4 vulnerable to URISyntaxException causing premature connection closure. Network-exploitable DoS risk. Patch immediately. #CVE #PatchNow #ThreatIntel https://t.co/WtVpv1eyR5

    Post summary

    The tweet highlights a high‑severity CVE‑2020‑5403 affecting Reactor Netty HttpServer, explains the DoS vulnerability, and urges immediate patching.

    0000031
    124 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appbroadcomreactor_netty0.9.3--
Appbroadcomreactor_netty0.9.4--

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