SB2026111090 - Multiple vulnerabilities in Oracle Communications Cloud Native Core Security Edge Protection Proxy
Published: November 10, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 vulnerabilities.
1) Uncontrolled Recursion (CVE-ID: CVE-2025-48924)
CWE-ID: CWE-674 - Uncontrolled Recursion
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the methods ClassUtils.getClass(...) can throw StackOverflowError on very long inputs. Because an Error is usually not handled by applications and libraries, a StackOverflowError could cause an application to stop. A remote attacker can trigger uncontrolled recursion and perform a denial of service (DoS) attack.
2) Improper input validation (CVE-ID: CVE-2026-41989)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 5.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local non-authenticated attacker to damange or delete data.
The vulnerability exists due to improper input validation within the Alarms, KPI, and Measurements (libgcrypt) component in Oracle Communications Cloud Native Core Policy. A local non-authenticated attacker can exploit this vulnerability to damange or delete data.
3) Resource exhaustion (CVE-ID: CVE-2026-55831)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in DefaultSpdySettingsFrame settings map handling when processing a crafted SPDY/3.1 SETTINGS frame. A remote attacker can send a specially crafted SETTINGS frame to cause a denial of service.
Exploitation requires the target to accept SPDY/3.1 traffic through a Netty pipeline containing SpdyFrameCodec.
4) Buffer under-read (CVE-ID: CVE-2026-5928)
CWE-ID: CWE-127 - Buffer Under-read
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to calling the ungetwc function on a FILE stream with wide characters encoded in a character set that has overlaps between its single byte and multi-byte character encodings, in the GNU C Library may result in an attempt to read bytes before an allocated buffer. A remote attacker can pass specially crafted data to the application, causing disclosure of neighboring data in the heap, or a program crash.
5) Out-of-bounds write (CVE-ID: CVE-2026-63388)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to an out-of-bounds write in bufferevent_socket_set_conn_address_ when processing AF_UNIX accept() results for peer socket addresses. A remote attacker can connect to a vulnerable Unix domain socket with a specially crafted abstract-namespace address to execute arbitrary code.
On builds with NDEBUG, the assertion guarding the copy is disabled. Exploitation requires access to connect to the application's AF_UNIX listener, and on pthread-enabled servers the overwrite can corrupt a lock pointer that is later dereferenced inside libc.
6) Input validation error (CVE-ID: CVE-2026-13321)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to poison the DNS cache and cause authenticated denial-of-service responses.
The vulnerability exists due to improper input validation in DNSSEC NSEC record validation when processing validly signed NSEC records whose next domain name points outside the signer's zone. A remote attacker can craft malicious NSEC records to poison the DNS cache and cause authenticated denial-of-service responses.
Exploitation requires control of any DNSSEC-signed zone.
7) Improper Certificate Validation (CVE-ID: CVE-2026-8763)
CWE-ID: CWE-295 - Improper Certificate Validation
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to bypass name constraints validation.
The vulnerability exists due to improper certificate validation in name constraints processing when handling rfc822Name and URI values with a trailing dot. A remote attacker can supply a crafted identifier to bypass name constraints validation.
8) Use-after-free (CVE-ID: CVE-2026-29167)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in mod_ldap per-directory configuration when processing per-directory configuration. A local user can trigger processing of affected per-directory configuration to cause a denial of service.
Remediation
Install update from vendor's website.