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CVE-2025-4821

🗓️ 23 Jun 2025 08:38:41Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 19 Views

Cloudflare quiche has a congestion window issue allowing data to be sent too quickly if exploited.

Related
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD
quiche -- Multiple vulnerabilities
18 Jun 202500:00
–freebsd
alpinelinux
AlpineLinux
CVE-2025-4821
18 Jun 202515:47
–alpinelinux
bdu_fstec
BDU FSTEC
CloudFlare Quiche DoS
24 Jun 202500:00
–bdu_fstec
circl
Circl
CVE-2025-4821
18 Jun 202516:30
–circl
cnnvd
CNNVD
Quiche security vulnerabilities
18 Jun 202500:00
–cnnvd
cve
CVE
CVE-2025-4821
18 Jun 202515:47
–cve
cvelist
Cvelist
CVE-2025-4821 Incorrect congestion window growth by invalid ACK ranges
18 Jun 202515:47
–cvelist
euvd
EUVD
EUVD-2025-18651
3 Oct 202520:07
–euvd
nessus
Tenable Nessus
FreeBSD : quiche -- Multiple vulnerabilities (7b0cbc73-9955-11f0-b6e2-6805ca2fa271)
26 Sep 202500:00
–nessus
mend
Mend
CVE-2025-4821
18 Jun 202515:47
–mend
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26 Sep 2025 08:58Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.5
EPSS0.00936
SSVC
19