Vulnerabilidades exploradas (CISA KEV)

CVE-2026-31431 Alta · 7.8 KEV Urgente · 72 Exploit público CWE-669 22/04/2026

Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability

In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.

CVE-2025-32463 Alta · 7.8 KEV Urgente · 76 Exploit público CWE-829 30/06/2025

Sudo Inclusion of Functionality from Untrusted Control Sphere Vulnerability

Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf from a user-controlled directory is used with the --chroot option.

CVE-2022-2586 Alta · 7.8 KEV Alta · 61 Exploit público CWE-416 08/01/2024

Linux Kernel Use-After-Free Vulnerability

It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.

CVE-2023-4911 Alta · 7.8 KEV Urgente · 76 Exploit público CWE-787 03/10/2023

GNU C Library Buffer Overflow Vulnerability

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

CVE-2023-0386 Alta · 7.8 KEV Urgente · 73 Exploit público CWE-282 22/03/2023

Linux Kernel Improper Ownership Management Vulnerability

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities was found in the Linux kernel’s OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount. This uid mapping bug allows a local user to escalate their privileges on the system.

CVE-2022-0492 Alta · 7.8 KEV Urgente · 73 Exploit público CWE-862 03/03/2022

Linux Kernel Improper Authentication Vulnerability

A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.

CVE-2021-3560 Alta · 7.8 KEV Urgente · 76 Exploit público CWE-754 16/02/2022

Red Hat Polkit Incorrect Authorization Vulnerability

It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVE-2021-4034 Alta · 7.8 KEV Urgente · 86 Exploit público Ransomware CWE-125 28/01/2022

Red Hat Polkit Out-of-Bounds Read and Write Vulnerability

A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.

CVE-2021-3493 Alta · 7.8 KEV Urgente · 74 Exploit público CWE-863 17/04/2021

Linux Kernel Privilege Escalation Vulnerability

The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges.

CVE-2020-1472 Média · 5.5 KEV Urgente · 96 Exploit público Ransomware 17/08/2020

Microsoft Netlogon Privilege Escalation Vulnerability

An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network. To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access. Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels. For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472 (updated September 28, 2020). When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.

CVE-2020-11651 Crítica · 9.8 KEV Urgente · 83 Exploit público 30/04/2020

SaltStack Salt Authentication Bypass Vulnerability

An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. The salt-master process ClearFuncs class does not properly validate method calls. This allows a remote user to access some methods without authentication. These methods can be used to retrieve user tokens from the salt master and/or run arbitrary commands on salt minions.

CVE-2020-11652 Média · 6.5 KEV Urgente · 73 Exploit público CWE-22 30/04/2020

SaltStack Salt Path Traversal Vulnerability

An issue was discovered in SaltStack Salt before 2019.2.4 and 3000 before 3000.2. The salt-master process ClearFuncs class allows access to some methods that improperly sanitize paths. These methods allow arbitrary directory access to authenticated users.

CVE-2019-17026 Alta · 8.8 KEV Urgente · 70 Exploit público CWE-843 02/03/2020

Mozilla Firefox And Thunderbird Type Confusion Vulnerability

Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.

CVE-2020-7247 Crítica · 9.8 KEV Urgente · 83 Exploit público CWE-78 29/01/2020

OpenSMTPD Remote Code Execution Vulnerability

smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.

CVE-2019-11043 Crítica · 9.8 KEV Urgente · 90 Exploit público Ransomware CWE-787 28/10/2019

PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.

CVE-2019-2215 Alta · 7.8 KEV Urgente · 76 Exploit público CWE-416 11/10/2019

Android Kernel Use-After-Free Vulnerability

A use-after-free in binder.c allows an elevation of privilege from an application to the Linux Kernel. No user interaction is required to exploit this vulnerability, however exploitation does require either the installation of a malicious local application or a separate vulnerability in a network facing application.Product: AndroidAndroid ID: A-141720095

CVE-2019-16928 Crítica · 9.8 KEV Alta · 63 CWE-787 27/09/2019

Exim Out-of-bounds Write Vulnerability

Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

CVE-2019-13272 Alta · 7.8 KEV Urgente · 76 Exploit público 17/07/2019

Linux Kernel Improper Privilege Management Vulnerability

In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.

CVE-2019-10149 Crítica · 9.8 KEV Urgente · 80 Exploit público CWE-78 05/06/2019

Exim Mail Transfer Agent (MTA) Improper Input Validation

A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.

CVE-2019-0211 Alta · 7.8 KEV Urgente · 70 Exploit público CWE-416 08/04/2019

Apache HTTP Server Privilege Escalation Vulnerability

In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Non-Unix systems are not affected.

CVE-2018-14634 Alta · 7.8 KEV Alta · 69 Exploit público CWE-190 25/09/2018

Linux Kernel Integer Overflow Vulnerability

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system. Kernel versions 2.6.x, 3.10.x and 4.14.x are believed to be vulnerable.

CVE-2018-6789 Crítica · 9.8 KEV Urgente · 87 Exploit público Ransomware CWE-120 08/02/2018

Exim Buffer Overflow Vulnerability

An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.

CVE-2017-12617 Alta · 8.1 KEV Urgente · 76 Exploit público CWE-434 03/10/2017

Apache Tomcat Remote Code Execution Vulnerability

When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled (e.g. via setting the readonly initialisation parameter of the Default servlet to false) it was possible to upload a JSP file to the server via a specially crafted request. This JSP could then be requested and any code it contained would be executed by the server.

CVE-2016-8735 Crítica · 9.8 KEV Alta · 63 06/04/2017

Apache Tomcat Remote Code Execution Vulnerability

Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x before 9.0.0.M12 if JmxRemoteLifecycleListener is used and an attacker can reach JMX ports. The issue exists because this listener wasn't updated for consistency with the CVE-2016-3427 Oracle patch that affected credential types.

CVE-2016-5195 Alta · 7.0 KEV Urgente · 70 Exploit público CWE-362 10/11/2016

Linux Kernel Race Condition Vulnerability

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."