CVE-2025-4820 Incorrect congestion window growth by optimistic ACK

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4820 Incorrect congestion window growth by optimistic ACK

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

CVE-2025-4820

CVE-2025-4020 (CVE-2025-4820) affects the Cloudflare quiche library. The issue is an incorrect congestion window growth caused by an opportunistic ACK attack (RFC 9000, §21.4) that can allow a victim to send more data in flight than the path supports. An unauthenticated remote attacker can comple...

CVE-2025-4820 Incorrect congestion window growth by optimistic ACK

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating ...

PT-2025-26172 · Quiche · Quiche

Name of the Vulnerable Software and Affected Versions: quiche versions prior to 0.24.4 Description: The issue is related to incorrect congestion window growth, which could cause quiche to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can explo...

quiche 安全漏洞

quiche is a Cloudflare open source implementation of the IETF-designated QUIC transport protocol and HTTP/3. A security vulnerability exists in quiche that stems from an improperly growing congestion window that could cause data to be sent at a rate that exceeds the path support capability...

quiche 安全漏洞

quiche is a Cloudflare open source implementation of the IETF-designated QUIC transport protocol and HTTP/3. A security vulnerability exists in quiche that stems from an incorrect congestion window growth, which could result in sending data at a rate that exceeds the actual supported capacity of...

quiche -- Multiple vulnerabilities

Quiche Releases reports: This update includes 2 security fixes: Medium CVE-2025-4820: Incorrect congestion window growth by optimistic ACK. Reported by Louis Navarre on 2025-06-18. High CVE-2025-4821: Incorrect congestion window growth by invalid ACK ranges. Reported by Louis Navarre on 2025-06-1...

PT-2025-26173 · Quiche · Quiche

Name of the Vulnerable Software and Affected Versions: quiche versions prior to 0.24.4 Description: The issue is related to incorrect congestion window growth, which could cause quiche to send data at a rate faster than the path might actually support. An unauthenticated remote attacker can explo...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/iommu: Do not unset the “window” if it was never set. On pSeries, when a user attempts to use the same vfio container used by different iommu groups, the spaprtcesetwindow function returns -EPERM. The subsequent...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: tcp: correct handling of extreme memory squeeze Testing with iperf3 using the "pasta" protocol splicer has revealed a problem in the way tcp handles window advertising in extreme memory squeeze situations. Under memory pressure, ...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: powerpc/pseries/iommu: The IOMMU incorrectly marks the MMIO range in DDW. The Power Hypervisor may allocate MMIO windows that intersect with the Dynamic DMA Window DDW range, which involves 32-bit addressing. These MMIO pages...

X.Org X server, XWayland: Multiple Vulnerabilities

Background The X Window System is a graphical windowing system based on a client/server model. Description Multiple vulnerabilities have been discovered in X.Org X server and XWayland. Please review the CVE identifiers referenced below for details. Impact Please review the referenced CVE...

[SECURITY] Fedora 42 Update: kwin-6.3.5-3.fc42

KDE Window manager...

SUSE CVE-2025-5915

A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber LZSS window. This means the library may attempt to read beyond the allocated memory buffer, which can...

Quantifying Mix Network Privacy Erosion with Generative Models

Modern mix networks improve over Tor and provide stronger privacy guarantees by robustly obfuscating metadata. As long as a message is routed through at least one honest mixnode, the privacy of the users involved is safeguarded. However, the complexity of the mixing mechanisms makes it difficult ...

AZL-63857 CVE-2025-5915 affecting package libarchive for versions less than 3.6.1-7

A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber LZSS window. This means the library may attempt to read beyond the allocated memory buffer, which can...

CVE-2025-5915

A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber LZSS window. This means the library may attempt to read beyond the allocated memory buffer, which can...

📄 Remote for Mac 2025.6 Unauthenticated Arbitrary Input

Remote for Mac version 2025.6 allows for unauthenticated arbitrary input into the active window. Exploit Title: Remote for Mac 2025.6 - Unauthenticated Arbitrary Input into Active Window Date: 2025-05-28 Exploit Author: Chokri Hammedi Vendor Homepage: https://cherpake.com/ Software Link:...

📄 Remote for Windows 2024.15 Unauthenticated Arbitrary Input

Remote for Windows version 2024.15 allows for unauthenticated arbitrary input into the active window. Exploit Title: Remote for Windows 2024.15 - Unauthenticated Arbitrary Input into Active Window Date: 2025-05-23 Exploit Author: Chokri Hammedi Vendor Homepage: https://rs.ltd Software Link:...