Multiple integer signedness errors in the (1) process_bin_sasl_auth, (2)…
Priority MEDIUM 43CWE-189Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.
Summary
Multiple integer signedness errors in the (1) process_bin_sasl_auth, (2) process_bin_complete_sasl_auth, (3) process_bin_update, and (4) process_bin_append_prepend functions in Memcached 1.4.5 and earlier allow remote attackers to cause a denial of service (crash) via a large body length value in a packet.
Why it matters now
EPSS 0.22317 97th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Will not fix Red Hat: no fix planned
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 · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:* | up to 1.4.5 | Vulnerable | Memcached |
| cpe:2.3:a:memcached:memcached:1.2.7:*:*:*:*:*:*:* | 1.2.7 | Vulnerable | Memcached |
| cpe:2.3:a:memcached:memcached:1.2.8:*:*:*:*:*:*:* | 1.2.8 | Vulnerable | Memcached |
| cpe:2.3:a:memcached:memcached:1.4.0:*:*:*:*:*:*:* | 1.4.0 | Vulnerable | Memcached |
| cpe:2.3:a:memcached:memcached:1.4.1:*:*:*:*:*:*:* | 1.4.1 | Vulnerable | Memcached |
| cpe:2.3:a:memcached:memcached:1.4.2:*:*:*:*:*:*:* | 1.4.2 | Vulnerable | Memcached |
| cpe:2.3:a:memcached:memcached:1.4.3:*:*:*:*:*:*:* | 1.4.3 | Vulnerable | Memcached |
| cpe:2.3:a:memcached:memcached:1.4.4:*:*:*:*:*:*:* | 1.4.4 | Vulnerable | Memcached |
- cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:* Versions up to 1.4.5 Vulnerable ·Memcached
- cpe:2.3:a:memcached:memcached:1.2.7:*:*:*:*:*:*:* Versions 1.2.7 Vulnerable ·Memcached
- cpe:2.3:a:memcached:memcached:1.2.8:*:*:*:*:*:*:* Versions 1.2.8 Vulnerable ·Memcached
- cpe:2.3:a:memcached:memcached:1.4.0:*:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·Memcached
- cpe:2.3:a:memcached:memcached:1.4.1:*:*:*:*:*:*:* Versions 1.4.1 Vulnerable ·Memcached
- cpe:2.3:a:memcached:memcached:1.4.2:*:*:*:*:*:*:* Versions 1.4.2 Vulnerable ·Memcached
- cpe:2.3:a:memcached:memcached:1.4.3:*:*:*:*:*:*:* Versions 1.4.3 Vulnerable ·Memcached
- cpe:2.3:a:memcached:memcached:1.4.4:*:*:*:*:*:*:* Versions 1.4.4 Vulnerable ·Memcached
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| CloudForms Management Engine 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4971
- 2026-10-03 Alias added: GHSA-pj3v-4mjw-vvpv
References
More Memcached vulnerabilities
- TI-2018-15768 Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume… CVSS 3.0HIGH 7.5
- TI-2020-14353 Memcached 1.6.0 before 1.6.3 allows remote attackers to cause a denial of service (daemon… CVSS 3.1HIGH 7.5
- TI-2016-07164 Integer overflow in Memcached CVSS 3.0HIGH 8.1
- TI-2016-07162 Integer overflow in Memcached CVSS 3.0CRITICAL 9.8
- TI-2016-07163 Integer overflow in Memcached CVSS 3.0CRITICAL 9.8
- TI-2021-15418 Buffer Overflow vulnerability in authfile.c memcached 1.6.9 allows attackers to cause a… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2011-4971 · CVE Program
- CVE-2011-4971 · NVD
- FIRST EPSS
- GHSA-pj3v-4mjw-vvpv · GitHub Advisory Database · CC BY 4.0
- CVE-2011-4971 · 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