In memcached before 1.5.14, a NULL pointer dereference was found in the "lru mode" and…
Priority LOW 38CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 3 fixed, 2 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In memcached before 1.5.14, a NULL pointer dereference was found in the "lru mode" and "lru temp_ttl" commands. This causes a denial of service when parsing crafted lru command messages in process_lru_command in memcached.c.
Why it matters now
EPSS 0.02958 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 3 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:* | before 1.5.14 | Vulnerable | Memcached |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 18.10 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* | 19.04 | Vulnerable | Canonical |
- cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:* Versions before 1.5.14 Vulnerable ·Memcached
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* Versions 19.04 Vulnerable ·Canonical
Remediation
Red Hat 2 advisories
- RHSA-2020:5583 Released 2020-12-16 · Red Hat rating Moderatememcached security update
- Red Hat OpenStack Platform 13.0 memcached-1.4.39-3.el7ost
- Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server memcached-1.4.39-3.el7ost
- RHSA-2020:1576 Released 2020-04-28 · Red Hat rating Moderatememcached security update
- Red Hat Enterprise Linux AppStream (v. 8) memcached-1.5.9-3.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenStack Platform 10 (Newton) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 14 (Rocky) | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:1576 |
| Red Hat OpenStack Platform 13.0 | Fixed | RHSA-2020:5583 |
| Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server | Fixed | RHSA-2020:5583 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat OpenStack Platform 9 (Mitaka)
Timeline
- 2026-10-02 Threatist record created from CVE-2019-11596
- 2026-10-03 Alias added: GHSA-p785-ww3c-xg46
References
Patch 2
Sources
- CVE-2019-11596 · CVE Program
- CVE-2019-11596 · NVD
- FIRST EPSS
- GHSA-p785-ww3c-xg46 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-11596 · 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