Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-90463— Sssd: local oob read in nss service request parsers (`sss_nss_protocol_parse_svc_name` / `sss_nss_protocol_parse_svc_port`)

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
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.

Red Hat SSSD是美国Red Hat公司的一款身份认证与权限管理软件。 Red Hat SSSD存在缓冲区错误漏洞，该漏洞源于输入验证不当，本地攻击者可通过向NSS responder的UNIX套接字发送特制服务查找请求，造成越界读取，可能导致NSS responder进程崩溃，形成拒绝服务。

CVSS 4.0 · Medium EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1012 · Query Registry

Affected Version Matrix 7

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
Red Hat Red Hat OpenShift Container Platform 4 any affected
any affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-90463

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Sssd: local oob read in nss service request parsers (`sss_nss_protocol_parse_svc_name` / `sss_nss_protocol_parse_svc_port`)
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service (DoS) by crashing the NSS responder process. While unprivileged local clients can typically reach the socket, there is no evidence of privilege escalation or reliable data disclosure.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat SSSD 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat SSSD是美国Red Hat公司的一款身份认证与权限管理软件。 Red Hat SSSD存在缓冲区错误漏洞，该漏洞源于输入验证不当，本地攻击者可通过向NSS responder的UNIX套接字发送特制服务查找请求，造成越界读取，可能导致NSS responder进程崩溃，形成拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-90463

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-90463

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-90463 (2)

Same Patch Batch · Red Hat · 2026-09-14 · 7 CVEs total

CVE-2026-90947 7.8 HIGH Gimp: gimp: out-of-bounds write in lighting effects plugin via crafted preset file
CVE-2026-90949 7.8 HIGH Gimp: gimp: heap-based buffer overflow in psp loader due to selection-channel geometry mis
CVE-2026-90948 7.8 HIGH Gimp: gimp: heap-based buffer overflow in ico loader via integer overflow in embedded png
CVE-2026-90995 5.5 MEDIUM Sssd: sssd: local denial of service due to null pointer dereference in pam responder
CVE-2026-90996 4.0 MEDIUM Sssd: sssd: denial of service in nss responder via crafted zero-length requests
CVE-2026-90994 4.0 MEDIUM Sssd: sssd: denial of service via malformed pam v1 requests

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-125