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.
結論預警: CVE-2011-4971 綜合評估為高可利用風險（64.1/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 22.32%，百分位 97%） 核心證據: 已收錄 2 筆公開利用參考（Exploit-DB）。 強制指令: 存在公開利用—請盤點暴露面、落實緩解措施並優先修補。
風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。
| EDB-ID | 來源 | 類型 | 公開時間 | 連結 |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 46.07% | 22.32% | -23.75% |
| 2 | 2025-10-11 | 53.16% | 46.07% | -7.09% |
| 3 | 2025-05-24 | — | 53.16% | — |
完整 EPSS 歷史 （共 13 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2011-4971 not yet assigned priority: Debian including 1 source packages (memcached), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-4971 |
gentoo
|
normal | CVE-2011-4971: 1 GLSA(s) (201406-13), 1 atom(s) (net-misc/memcached); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4971 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2011-4971 |
suse
|
low | CVE-2011-4971 severity low: SUSE including 13 source package names (memcached, memcached-1.4.33-1.1, …), 39 product×package rows across 27 product lines (SUSE Enterprise Storage 4, SUSE Enterprise Storage 7, … (27 product lines)): Known Not Affected 21, Fixed 18. | https://www.suse.com/security/cve/CVE-2011-4971/ |
ubuntu
|
low | CVE-2011-4971 low priority: Ubuntu including 1 source packages (memcached), 8 status rows across 8 suites (hardy, lucid, oneiric, precise, quantal, raring, saucy, upstream): released 5, ignored 3. | https://ubuntu.com/security/CVE-2011-4971 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| memcached | memcached | <= 1.4.5 | cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:* |
| memcached | memcached | 1.2.7 | cpe:2.3:a:memcached:memcached:1.2.7:*:*:*:*:*:*:* |
| memcached | memcached | 1.2.8 | cpe:2.3:a:memcached:memcached:1.2.8:*:*:*:*:*:*:* |
| memcached | memcached | 1.4.0 | cpe:2.3:a:memcached:memcached:1.4.0:*:*:*:*:*:*:* |
| memcached | memcached | 1.4.1 | cpe:2.3:a:memcached:memcached:1.4.1:*:*:*:*:*:*:* |
| memcached | memcached | 1.4.2 | cpe:2.3:a:memcached:memcached:1.4.2:*:*:*:*:*:*:* |
| memcached | memcached | 1.4.3 | cpe:2.3:a:memcached:memcached:1.4.3:*:*:*:*:*:*:* |
| memcached | memcached | 1.4.4 | cpe:2.3:a:memcached:memcached:1.4.4:*:*:*:*:*:*:* |