Authentication bypass vulnerability in mod_nss 1.0.8 allows remote attackers to assume…
Priority MEDIUM 44CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 6 fixed, 2 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-287.
Summary
Authentication bypass vulnerability in mod_nss 1.0.8 allows remote attackers to assume the identity of a valid user by using their certificate and entering 'password' as the password.
Why it matters now
EPSS 0.00999 62nd percentileScored 2026-11-07
Fix Partial Red Hat: 6 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mod_nss_project:mod_nss:1.0.8:*:*:*:*:*:*:* | 1.0.8 | Vulnerable | Mod Nss Project |
- cpe:2.3:a:mod_nss_project:mod_nss:1.0.8:*:*:*:*:*:*:* Versions 1.0.8 Vulnerable ·Mod Nss Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Certificate System 8 | Affected | No fix yet |
| Red Hat Directory Server 8 | Affected | No fix yet |
| Red Hat Enterprise Linux (v. 5 server) | Fixed | — |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | — |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | — |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | — |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | — |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4973
- 2026-10-03 Alias added: GHSA-mmjq-r7xw-fqr8
References
More Mod Nss Project Mod Nss vulnerabilities
- TI-2015-04404 The NSSCipherSuite option with ciphersuites enabled in mod_nss before 1.0.12 allows… CVSS 3.0CRITICAL 9.8
- TI-2015-02898 The mod_nss module before 1.0.11 in Fedora allows remote attackers to obtain cipher lists… CVSS 3.0HIGH 7.5
- TI-2013-04011 mod_nss 1.0.8 and earlier, when NSSVerifyClient is set to none for the server/vhost… CVSS 2.0MEDIUM 4.0
Sources
- CVE-2011-4973 · CVE Program
- CVE-2011-4973 · NVD
- FIRST EPSS
- GHSA-mmjq-r7xw-fqr8 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-4973 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences