CVE-2026-54780Disclosure

LOWCVSS 3.7 · LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, the CoreWCF WS-Security 1.0 receive pipeline validates ds:SignedInfo SignatureMethod against the configured SecurityAlgorithmSuite but does not validate each ds:Reference DigestMethod, allowing a sender to use a rejected digest algorithm such as SHA-1 while the message is still accepted. This issue is fixed in versions 1.8.1 and 1.9.1.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-327CWE-757

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

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
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-10: 1Patch / Workaround · 2026-07-10: 1Technical Details · 2026-07-10: 107-10
Signal classification1 categories
Disclosure
1100.0%
Full discourse1 post
  • 𝔸𝕟𝕠𝕟𝕪𝕞𝕠𝕦𝕤 ℍ𝕒𝕔𝕜𝕥𝕚𝕧𝕚𝕤𝕥☭⃠🅇@YourAnon_irc
    Disclosure

    Critical zero-day CVE-2026-50751 (Check Point VPN) allows auth bypass, threatening data privacy & integrity in transit. New CoreWCF bug (CVE-2026-54780) also impacts backend comms (1 hr ago). Patch ASAP! #Cybersecurity #News #Anonymous

    Post summary

    The tweet announces two critical CVEs, highlighting an auth bypass in Check Point VPN and a CoreWCF bug, and urges users to apply patches immediately.

    00000106
    14 followersView on X

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