CVE-2026-15722— 389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsing
Quick assessment
Affected
Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
389 Directory Server是389 Directory Server团队开源的一个高度可用、功能齐全、可靠和安全的LDAP服务器实现。 389 Directory Server存在缓冲区错误漏洞，该漏洞源于repl5_ruv.c文件中的get_ruvelement_from_berval()函数在将网络提供的RUV berval中的数字字符复制到固定16字节栈缓冲区时未进行边界检查，可能导致远程未认证攻击者通过发送特制StartNSDS50ReplicationRequest扩展操作使LDA
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 21
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I. Basic Information for CVE-2026-15722
Vulnerability Information
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Vulnerability Title
389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsing
Source: CVE Program / CVE List V5
Vulnerability Description
A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
389 Directory Server 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
389 Directory Server是389 Directory Server团队开源的一个高度可用、功能齐全、可靠和安全的LDAP服务器实现。 389 Directory Server存在缓冲区错误漏洞，该漏洞源于repl5_ruv.c文件中的get_ruvelement_from_berval()函数在将网络提供的RUV berval中的数字字符复制到固定16字节栈缓冲区时未进行边界检查，可能导致远程未认证攻击者通过发送特制StartNSDS50ReplicationRequest扩展操作使LDA
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Directory Server 11.7 E4S for RHEL 8 | 8080020260806114250.f969626e ~ * |
cpe:/a:redhat:directory_server_e4s:11.7::el8
|
|
| Red Hat | Red Hat Directory Server 11.9 for RHEL 8 | 8100020260803140625.37ed7c03 ~ * |
cpe:/a:redhat:directory_server:11.9::el8
|
|
| Red Hat | Red Hat Directory Server 12.2 E4S for RHEL 9 | 9020020260730155601.1674d574 ~ * |
cpe:/a:redhat:directory_server_e4s:12.2::el9
|
|
| Red Hat | Red Hat Directory Server 12.4 E4S for RHEL 9 | 9040020260810131422.1674d574 ~ * |
cpe:/a:redhat:directory_server_e4s:12.4::el9
|
|
| Red Hat | Red Hat Enterprise Linux 10 | 0:3.2.0-9.el10_2 ~ * |
cpe:/o:redhat:enterprise_linux:10.2
|
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | 0:3.0.6-20.el10_0 ~ * |
cpe:/o:redhat:enterprise_linux_eus:10.0
|
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:1.3.11.1-14.el7_9 ~ * |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | 8100020260806150504.25e700aa ~ * |
cpe:/a:redhat:enterprise_linux:8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 8040020260803141511.96015a92 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | 8040020260803141511.96015a92 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 8060020260806120442.824efc52 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | 8060020260806120442.824efc52 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 8080020260806114228.6dbb3803 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 8080020260806114228.6dbb3803 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:2.8.0-9.el9_8 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:2.2.4-20.el9_2 ~ * |
cpe:/a:redhat:rhel_e4s:9.2::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | 0:2.4.5-27.el9_4 ~ * |
cpe:/a:redhat:rhel_e4s:9.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:2.6.1-23.el9_6 ~ * |
cpe:/a:redhat:rhel_eus:9.6::appstream
|
|
| Red Hat | Red Hat Directory Server 12 | - |
cpe:/a:redhat:directory_server:12
|
|
| Red Hat | Red Hat Directory Server 13 | - |
cpe:/a:redhat:directory_server:13
|
|
| Red Hat | Red Hat Enterprise Linux 6 | - |
cpe:/o:redhat:enterprise_linux:6
|
|
II. Public POCs for CVE-2026-15722
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-15722 (17)
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🔗 RHSA-2026:55758 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55421 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55423 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55794 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55424 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:56048 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55422 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:56047 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55530 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55532 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:55756 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
Same Patch Batch · Red Hat · 2026-07-31 · 14 CVEs total
| CVE-2026-10079 | 8.5 HIGH | Stackrox: stackrox: deploy-time policy enforcement and visibility bypass via label injecti |
| CVE-2026-18141 | 8.2 HIGH | Aap-gateway: aap-gateway: authentication bypass in event-driven ansible via forged http he |
| CVE-2026-11770 | 7.5 HIGH | 389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check |
| CVE-2026-18215 | 6.8 MEDIUM | Keycloak-services: keycloak-services: microsoft external access-token exchange bypasses co |
| CVE-2026-18214 | 6.8 MEDIUM | Keycloak-services: keycloak-services: google external access-token exchange bypasses hoste |
| CVE-2026-18208 | 6.5 MEDIUM | Keycloak-services: keycloak-services: inactive out-of-audience token introspection leaks s |
| CVE-2026-18203 | 6.5 MEDIUM | Keycloak-services: keycloak-services: group policy extendchildren matches sibling group pa |
| CVE-2026-16105 | 4.9 MEDIUM | Keycloak-services: keycloak-services: missing per-role authorization on rolecontainerresou |
| CVE-2026-18218 | 4.2 MEDIUM | Keycloak-services: keycloak-services: client not-before revocation ignored when realm not- |
| CVE-2026-18211 | 4.2 MEDIUM | Keycloak-services: keycloak-services: secure-client-uris policy bypass via localhost-prefi |
| CVE-2026-18206 | 3.7 LOW | Keycloak-services: keycloak-services: client policy source-host wildcard domain matching b |
| CVE-2026-18217 | 3.4 LOW | Keycloak-services: keycloak-services: saml http-redirect binding response preserves query |
| CVE-2026-18209 | 3.4 LOW | Keycloak-services: keycloak-services: oidc redirect_uri fragment bypass in http parameter |
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V. Comments for CVE-2026-15722
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