Splunk
Splunk Universal Forwarder: vulnerabilities and CVEs
Splunk Universal Forwarder has 61 published vulnerabilities, 0 of them in the last 12 months. 6 are rated critical and 0 are listed by CISA as actively exploited.
CVEs61
Last 12 months0
Critical6
Actively exploited0
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Latest vulnerabilities
| CVE | Severity | EPSS | Active exploitation | Published | Description |
|---|---|---|---|---|---|
| CVE-2025-20298 | High (8) | 0.29% | — | Jun 2, 2025 | In Universal Forwarder for Windows versions below 9.4.2, 9.3.4, 9.2.6, and 9.1.9, a new installation of or an upgrade to an affected version can result in incorrect permissions assignment in the Universal Forwarder for… |
| CVE-2023-27538 | Medium (5.5) | 1.3% | — | Mar 30, 2023 | An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse.… |
| CVE-2023-27537 | Medium (5.9) | 1.9% | — | Mar 30, 2023 | A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate "handles". This sharing was introduced without considerations for do this sharing across separate threads but there was no… |
| CVE-2023-27536 | Medium (5.9) | 1.6% | — | Mar 30, 2023 | An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in… |
| CVE-2023-27535 | Medium (5.9) | 1.6% | — | Mar 30, 2023 | An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in… |
| CVE-2023-27534 | High (8.8) | 2.2% | — | Mar 30, 2023 | A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde (~) character to be wrongly replaced when used as a prefix in the first path element, in addition to its intended use as the… |
| CVE-2023-27533 | High (8.8) | 2.0% | — | Mar 30, 2023 | A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The… |
| CVE-2023-23916 | Medium (6.5) | 1.7% | — | Feb 23, 2023 | An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and… |
| CVE-2023-23915 | Medium (6.5) | 0.86% | — | Feb 23, 2023 | A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause HSTS functionality to behave incorrectly when multiple URLs are requested in parallel. Using its HSTS support,… |
| CVE-2023-23914 | Critical (9.1) | 0.86% | — | Feb 23, 2023 | A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause HSTS functionality fail when multiple URLs are requested serially. Using its HSTS support, curl can be instructed… |
| CVE-2022-43552 | Medium (5.9) | 2.5% | — | Feb 9, 2023 | A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting… |
| CVE-2022-43551 | High (7.5) | 17% | — | Dec 23, 2022 | A vulnerability exists in curl <7.87.0 HSTS check that could be bypassed to trick it to keep using HTTP. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even… |
| CVE-2022-35260 | Medium (6.5) | 1.8% | — | Dec 5, 2022 | curl can be told to parse a `.netrc` file for credentials. If that file endsin a line with 4095 consecutive non-white space letters and no newline, curlwould first read past the end of the stack-based buffer, and if the… |
| CVE-2022-32221 | Critical (9.8) | 4.4% | — | Dec 5, 2022 | When doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously was… |
| CVE-2022-36227 | Critical (9.8) | 2.4% | — | Nov 22, 2022 | In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. NOTE:… |
| CVE-2022-42915 | High (8.1) | 3.1% | — | Oct 29, 2022 | curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then… |
| CVE-2022-42916 | High (7.5) | 1.8% | — | Oct 29, 2022 | In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step) even… |
| CVE-2022-35252 | Low (3.7) | 2.4% | — | Sep 23, 2022 | When curl is used to retrieve and parse cookies from a HTTP(S) server, itaccepts cookies using control codes that when later are sent back to a HTTPserver might make the server return 400 responses. Effectively allowing… |
| CVE-2021-31566 | High (7.8) | 0.39% | — | Aug 23, 2022 | An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a… |
| CVE-2022-37439 | Medium (5.5) | 0.20% | — | Aug 16, 2022 | In Splunk Enterprise and Universal Forwarder versions in the following table, indexing a specially crafted ZIP file using the file monitoring input can result in a crash of the application. Attempts to restart the… |
| CVE-2022-35737 | High (7.5) | 23% | — | Aug 3, 2022 | SQLite 1.0.12 through 3.39.x before 3.39.2 sometimes allows an array-bounds overflow if billions of bytes are used in a string argument to a C API. |
| CVE-2022-32208 | Medium (5.9) | 7.5% | — | Jul 7, 2022 | When curl < 7.84.0 does FTP transfers secured by krb5, it handles message verification failures wrongly. This flaw makes it possible for a Man-In-The-Middle attack to go unnoticed and even allows it to inject data to… |
| CVE-2022-32207 | Critical (9.8) | 7.7% | — | Jul 7, 2022 | When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by finalizing the operation with a rename from a temporary name to the final target file name.In that rename… |
| CVE-2022-32206 | Medium (6.5) | 33% | — | Jul 7, 2022 | curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this… |
| CVE-2022-32205 | Medium (4.3) | 28% | — | Jul 7, 2022 | A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to curl and curl < 7.84.0 stores all of them. A sufficiently large amount of (big) cookies make subsequent HTTP requests to… |
| CVE-2022-32156 | High (8.1) | 0.80% | — | Jun 15, 2022 | In Splunk Enterprise and Universal Forwarder versions before 9.0, the Splunk command-line interface (CLI) did not validate TLS certificates while connecting to a remote Splunk platform instance by default. After… |
| CVE-2022-30115 | Medium (4.3) | 1.3% | — | Jun 2, 2022 | Using its HSTS support, curl can be instructed to use HTTPS directly insteadof using an insecure clear-text HTTP step even when HTTP is provided in theURL. This mechanism could be bypassed if the host name in the given… |
| CVE-2022-27782 | High (7.5) | 2.9% | — | Jun 2, 2022 | libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should have prohibited reuse.libcurl keeps previously used connections in a connection pool for… |
| CVE-2022-27781 | High (7.5) | 2.7% | — | Jun 2, 2022 | libcurl provides the `CURLOPT_CERTINFO` option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS… |
| CVE-2022-27780 | High (7.5) | 2.5% | — | Jun 2, 2022 | The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL… |