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CVE-2026-11790— 389-ds-base: 389-ds-base: pbkdf2 password storage plugin unbounded iteration count denial of service

CVSS 4.9 · Medium EPSS 0.29% · P22

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-11790

Vulnerability Information
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Vulnerability Title
389-ds-base: 389-ds-base: pbkdf2 password storage plugin unbounded iteration count denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password storage plugin does not enforce an upper bound on the iteration count extracted from stored password hashes. A privileged attacker who can modify a user's password hash can cause excessive CPU consumption during authentication, resulting in denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
389 Directory Server 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
389 Directory Server是389 Directory Server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存在资源管理错误漏洞，该漏洞源于PBKDF2-SHA256密码存储插件未对从存储密码哈希中提取的迭代次数强制执行上限，导致特权攻击者修改用户密码哈希后，在身份验证期间造成过度CPU消耗，从而导致拒绝服务。
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

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Directory Server 11-cpe:/a:redhat:directory_server:11
Red HatRed Hat Directory Server 12-cpe:/a:redhat:directory_server:12
Red HatRed Hat Directory Server 13-cpe:/a:redhat:directory_server:13
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-11790

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III. Intelligence Information for CVE-2026-11790

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Vendor Advisories for CVE-2026-11790 (3)

Same Patch Batch · Red Hat · 2026-06-09 · 9 CVEs total

CVE-2026-117885.9 MEDIUM389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser
CVE-2026-117875.0 MEDIUM389-ds-base: 389-ds-base: heap buffer over-read in ldap_utf8prev() via str2simple filter p
CVE-2026-117934.9 MEDIUM389-ds-base: 389-ds-base: stack buffer overflow in checkprefix() algorithm id parsing
CVE-2026-117894.9 MEDIUM389-ds-base: 389-ds-base: smd5 password storage plugin salt length integer underflow crash
CVE-2026-529024.7 MEDIUMAwxkit: path traversal via yaml !include directive
CVE-2026-117854.3 MEDIUM389-ds-base: 389-ds-base: partial stack address information leak via ber_printf type confu
CVE-2026-117923.3 LOW389-ds-base: 389-ds-base: heap buffer overflow in audit log password masking (create_maske
CVE-2026-117861.9 LOW389-ds-base: 389-ds-base: heap out-of-bounds read in ldif parser str2entry_state_informati

IV. Related Vulnerabilities

Same product: Red Hat Directory Server 11
Same vendor: Red Hat
Same weakness: CWE-400

V. Comments for CVE-2026-11790

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