Red Hat Codeready Linux Builder For IBM Z Systems vulnerabilities

16 CVEs affecting Red Hat Codeready Linux Builder For IBM Z Systems, 1 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2025-13601, published 2025-11-26.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2023-4911: GNU C Library Buffer Overflow Vulnerability, published 2023-10-03. High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2023-11-21. EPSS: 63.8% chance of exploitation in the next 30 days. 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…
CVE-2021-3737, published 2022-03-04. High severity, CVSS 7.5. EPSS: 13.2% chance of exploitation in the next 30 days. A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an…
CVE-2025-3155, published 2025-04-03. High severity, CVSS 7.4. EPSS: 13.1% chance of exploitation in the next 30 days. A flaw was found in Yelp. The Gnome user help application allows the help document to execute arbitrary scripts. This vulnerability allows malicious users to input help documents, which may…
CVE-2021-3733, published 2022-03-10. Medium severity, CVSS 6.5. EPSS: 4.8% chance of exploitation in the next 30 days. There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression…
CVE-2023-4527, published 2023-09-18. Medium severity, CVSS 6.5. EPSS: 1.7% chance of exploitation in the next 30 days. A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger…
CVE-2023-4806, published 2023-09-18. Medium severity, CVSS 5.9. EPSS: 1.6% chance of exploitation in the next 30 days. A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable…
CVE-2020-27842, published 2021-01-05. Medium severity, CVSS 5.5. EPSS: 1.5% chance of exploitation in the next 30 days. There's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest…
CVE-2023-3758, published 2024-04-18. High severity, CVSS 7.1. EPSS: 1% chance of exploitation in the next 30 days. A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to…
CVE-2025-2784, published 2025-04-03. Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days. A flaw was found in libsoup. The package is vulnerable to a heap buffer over-read when sniffing content via the skip_insight_whitespace() function. Libsoup clients may read one byte out-of-bounds in…
CVE-2024-0193, published 2024-01-02. Medium severity, CVSS 6.7. EPSS: 0.8% chance of exploitation in the next 30 days. A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This…

Latest

CVE-2025-13601, published 2025-11-26. High severity, CVSS 7.7. EPSS: 0.3% chance of exploitation in the next 30 days. A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in the g_escape_uri_string() function. If the string to escape contains a very large number of…
CVE-2024-1488, published 2024-02-15. High severity, CVSS 7.3. EPSS: 0.3% chance of exploitation in the next 30 days. A vulnerability was found in Unbound due to incorrect default permissions, allowing any process outside the unbound group to modify the unbound runtime configuration. If a process can connect over…
CVE-2023-4641, published 2023-12-27. Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days. A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to…
CVE-2023-5633, published 2023-10-23. High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days. The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a…