Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.
総合評価: CVE-2016-6354 は高リスク(67.3/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 8.84%、95 パーセンタイル) 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 36.24% | 8.84% | -27.41% |
| 2 | 2026-05-31 | 37.71% | 36.24% | -1.47% |
| 3 | 2026-04-17 | — | 37.71% | — |
EPSS の全履歴 (全 20 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-6354 not yet assigned priority: Debian including 1 source packages (flex), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-6354 |
gentoo
|
high | CVE-2016-6354: 2 GLSA(s) (201701-31, 201802-03), 3 atom(s) (sys-devel/flex, www-client/firefox, www-client/firefox-bin); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-6354 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-6354 |
suse
|
low | CVE-2016-6354 severity low: SUSE including 212 source package names (MozillaFirefox-102.11.0-150200.152.87.1, MozillaFirefox-115.10.0-150200.152.134.1, …), 611 product×package rows across 96 product lines (Container caasp/v4/openldap, Image SLES12-SP5-Azure-BYOS, … (96 product lines)): Fixed 587, Known Not Affected 24. | https://www.suse.com/security/cve/CVE-2016-6354/ |
ubuntu
|
low | CVE-2016-6354 low priority: Ubuntu including 1 source packages (flex), 24 status rows across 24 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, wily, xenial, yakkety, zesty): not-affected 20, DNE 1, ignored 1, needed 1, released 1. | https://ubuntu.com/security/CVE-2016-6354 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| westes | flex | <= 2.6.0 | cpe:2.3:a:westes:flex:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.debian.org/security/2016/dsa-3653 | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2016/07/18/8 | Release Notes Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2016/07/26/12 | Release Notes Third Party Advisory |
| https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466 | Patch |
| https://security.gentoo.org/glsa/201701-31 |