Vulnerabilities (CVE)

Filtered by CWE-20
Total 13735 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2021-41585 1 Apache 1 Traffic Server 2026-06-17 5.0 MEDIUM 7.5 HIGH
Improper Input Validation vulnerability in accepting socket connections in Apache Traffic Server allows an attacker to make the server stop accepting new connections. This issue affects Apache Traffic Server 5.0.0 to 9.1.0.
CVE-2021-41583 3 Debian, Eduvpn, Fedoraproject 3 Debian Linux, Vpn-user-portal, Fedora 2026-06-17 9.0 HIGH 6.5 MEDIUM
vpn-user-portal (aka eduVPN or Let's Connect!) before 2.3.14, as packaged for Debian 10, Debian 11, and Fedora, allows remote authenticated users to obtain OS filesystem access, because of the interaction of QR codes with an exec that uses the -r option. This can be leveraged to obtain additional VPN access.
CVE-2021-41561 1 Apache 1 Parquet Java 2026-06-17 5.0 MEDIUM 7.5 HIGH
Improper Input Validation vulnerability in Parquet-MR of Apache Parquet allows an attacker to DoS by malicious Parquet files. This issue affects Apache Parquet-MR version 1.9.0 and later versions.
CVE-2021-41531 1 Nlnetlabs 1 Routinator 2026-06-17 5.0 MEDIUM 7.5 HIGH
NLnet Labs Routinator prior to 0.10.0 produces invalid RTR payload if an RPKI CA uses too large values in the max-length parameter in a ROA. This will lead to RTR clients such as routers to reject the RPKI data set, effectively disabling Route Origin Validation.
CVE-2021-41380 1 Realvnc 1 Vnc Viewer 2026-06-17 4.3 MEDIUM 6.5 MEDIUM
RealVNC Viewer 6.21.406 allows remote VNC servers to cause a denial of service (application crash) via crafted RFB protocol data. NOTE: It is asserted that this issue requires social engineering a user into connecting to a fake VNC Server. The VNC Viewer application they are using will then hang, until terminated, but no memory leak occurs - the resources are freed once the hung process is terminated and the resource usage is constant during the hang. Only the process that is connected to the fake Server is affected. This is an application bug, not a security issue
CVE-2021-41250 1 Pythondiscord 1 Bot 2026-06-17 4.0 MEDIUM 4.3 MEDIUM
Python discord bot is the community bot for the Python Discord community. In affected versions when a non-blacklisted URL and an otherwise triggering filter token is included in the same message the token filter does not trigger. This means that by including any non-blacklisted URL moderation filters can be bypassed. This issue has been resolved in commit 67390298852513d13e0213870e50fb3cff1424e0
CVE-2021-41173 1 Ethereum 1 Go Ethereum 2026-06-17 3.5 LOW 5.7 MEDIUM
Go Ethereum is the official Golang implementation of the Ethereum protocol. Prior to version 1.10.9, a vulnerable node is susceptible to crash when processing a maliciously crafted message from a peer. Version v1.10.9 contains patches to the vulnerability. There are no known workarounds aside from upgrading.
CVE-2021-41168 1 Reddit 1 Snudown 2026-06-17 4.0 MEDIUM 6.5 MEDIUM
Snudown is a reddit-specific fork of the Sundown Markdown parser used by GitHub, with Python integration added. In affected versions snudown was found to be vulnerable to denial of service attacks to its reference table implementation. References written in markdown ` [reference_name]: https://www.example.com` are inserted into a hash table which was found to have a weak hash function, meaning that an attacker can reliably generate a large number of collisions for it. This makes the hash table vulnerable to a hash-collision DoS attack, a type of algorithmic complexity attack. Further the hash table allowed for duplicate entries resulting in long retrieval times. Proofs of concept and further discussion of the hash collision issue are discussed on the snudown GHSA(https://github.com/reddit/snudown/security/advisories/GHSA-6gvv-9q92-w5f6). Users are advised to update to version 1.7.0.
CVE-2021-41138 1 Parity 1 Frontier 2026-06-17 5.0 MEDIUM 5.3 MEDIUM
Frontier is Substrate's Ethereum compatibility layer. In the newly introduced signed Frontier-specific extrinsic for `pallet-ethereum`, a large part of transaction validation logic was only called in transaction pool validation, but not in block execution. Malicious validators can take advantage of this to put invalid transactions into a block. The attack is limited in that the signature is always validated, and the majority of the validation is done again in the subsequent `pallet-evm` execution logic. However, do note that a chain ID replay attack was possible. In addition, spamming attacks are of main concerns, while they are limited by Substrate block size limits and other factors. The issue is patched in commit `146bb48849e5393004be5c88beefe76fdf009aba`.
CVE-2021-41133 3 Debian, Fedoraproject, Flatpak 3 Debian Linux, Fedora, Flatpak 2026-06-17 4.6 MEDIUM 8.8 HIGH
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.
CVE-2021-41114 1 Typo3 1 Typo3 2026-06-17 5.0 MEDIUM 4.8 MEDIUM
TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that TYPO3 CMS is susceptible to host spoofing due to improper validation of the HTTP Host header. TYPO3 uses the HTTP Host header, for example, to generate absolute URLs during the frontend rendering process. Since the host header itself is provided by the client, it can be forged to any value, even in a name-based virtual hosts environment. This vulnerability is the same as described in TYPO3-CORE-SA-2014-001 (CVE-2014-3941). A regression, introduced during TYPO3 v11 development, led to this situation. The already existing setting $GLOBALS['TYPO3_CONF_VARS']['SYS']['trustedHostsPattern'] (used as an effective mitigation strategy in previous TYPO3 versions) was not evaluated anymore, and reintroduced the vulnerability.
CVE-2021-41105 1 Freeswitch 1 Freeswitch 2026-06-17 5.0 MEDIUM 7.5 HIGH
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. When handling SRTP calls, FreeSWITCH prior to version 1.10.7 is susceptible to a DoS where calls can be terminated by remote attackers. This attack can be done continuously, thus denying encrypted calls during the attack. When a media port that is handling SRTP traffic is flooded with a specially crafted SRTP packet, the call is terminated leading to denial of service. This issue was reproduced when using the SDES key exchange mechanism in a SIP environment as well as when using the DTLS key exchange mechanism in a WebRTC environment. The call disconnection occurs due to line 6331 in the source file `switch_rtp.c`, which disconnects the call when the total number of SRTP errors reach a hard-coded threshold (100). By abusing this vulnerability, an attacker is able to disconnect any ongoing calls that are using SRTP. The attack does not require authentication or any special foothold in the caller's or the callee's network. This issue is patched in version 1.10.7.
CVE-2021-40712 1 Adobe 1 Experience Manager 2026-06-17 4.0 MEDIUM 6.5 MEDIUM
Adobe Experience Manager version 6.5.9.0 (and earlier) is affected by a improper input validation vulnerability via the path parameter. An authenticated attacker can send a malformed POST request to achieve server-side denial of service.
CVE-2021-40648 1 Man2html Project 1 Man2html 2026-06-17 N/A 5.5 MEDIUM
In man2html 1.6g, a filename can be created to overwrite the previous size parameter of the next chunk and the fd, bk, fd_nextsize, bk_nextsize of the current chunk. The next chunk is then freed later on, causing a freeing of an arbitrary amount of memory.
CVE-2021-40423 1 Reolink 2 Rlc-410w, Rlc-410w Firmware 2026-06-17 7.8 HIGH 7.5 HIGH
A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial of service. An attacker can send an HTTP request to trigger this vulnerability.
CVE-2021-40365 1 Siemens 192 Simatic Et 200 Sp Open Controller Cpu 1515sp Pc, Simatic Et 200 Sp Open Controller Cpu 1515sp Pc Firmware, Simatic S7-1200 Cpu 1211c and 189 more 2026-06-17 N/A 7.5 HIGH
Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial of service in the device.
CVE-2021-40127 1 Cisco 132 Sf200-24, Sf200-24 Firmware, Sf200-24fp and 129 more 2026-06-17 5.0 MEDIUM 5.3 MEDIUM
A vulnerability in the web-based management interface of Cisco Small Business 200 Series Smart Switches, Cisco Small Business 300 Series Managed Switches, and Cisco Small Business 500 Series Stackable Managed Switches could allow an unauthenticated, remote attacker to render the web-based management interface unusable, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause a permanent invalid redirect for requests sent to the web-based management interface of the device, resulting in a DoS condition.
CVE-2021-40120 1 Cisco 8 Application Extension Platform, Ios Xr, Rv016 and 5 more 2026-06-17 9.0 HIGH 6.5 MEDIUM
A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system and execute them using root-level privileges. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as a user with root-level privileges.
CVE-2021-40017 1 Huawei 2 Emui, Harmonyos 2026-06-17 N/A 9.8 CRITICAL
The HW_KEYMASTER module lacks the validity check of the key format. Successful exploitation of this vulnerability may result in out-of-bounds memory access.
CVE-2021-3970 1 Lenovo 210 Ideapad 3-14ada05, Ideapad 3-14ada05 Firmware, Ideapad 3-14ada6 and 207 more 2026-06-17 7.2 HIGH 6.7 MEDIUM
A potential vulnerability in LenovoVariable SMI Handler due to insufficient validation in some Lenovo Notebook models BIOS may allow an attacker with local access and elevated privileges to execute arbitrary code.