An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.
総合評価: CVE-2019-20454 は悪用リスクが高い(70.3/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 1.56%、72 パーセンタイル) 根拠: 公開エクスプロイトが 1 件参照されています(Exploit-DB)。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-07-01 | 1.52% | 1.56% | +0.04% |
| 2 | 2026-06-15 | 0.09% | 1.52% | +1.43% |
| 3 | 2025-11-21 | — | 0.09% | — |
EPSS の全履歴 (全 15 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.1 | 3.0 | MEDIUM |
|
1.4 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2019-20454 not yet assigned priority: Debian including 1 source packages (pcre2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-20454 |
gentoo
|
normal | CVE-2019-20454: 1 GLSA(s) (202006-16), 1 atom(s) (net-libs/pcre2); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-20454 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2019-20454 |
suse
|
medium | CVE-2019-20454 severity moderate: SUSE including 528 source package names (1.8.10.0.4.5.173:libpcre2-8-0-10.31-150000.3.12.1, 12-16.126:libpcre2-8-0-10.31-150000.3.12.1, …), 1379 product×package rows across 117 product lines (Container bci/bci-init, Container bci/nodejs, … (117 product lines)): Known Not Affected 943, Fixed 234, Known Affected 202. | https://www.suse.com/security/cve/CVE-2019-20454/ |
ubuntu
|
low | CVE-2019-20454 low priority: Ubuntu including 1 source packages (pcre2), 17 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 13, DNE 1, ignored 1, needed 1, released 1. | https://ubuntu.com/security/CVE-2019-20454 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| pcre | pcre2 | >= 10.31, < 10.34 | cpe:2.3:a:pcre:pcre2:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 31 | cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* |
| splunk | universal_forwarder | >= 8.2.0, < 8.2.12 | cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* |
| splunk | universal_forwarder | >= 9.0.0, < 9.0.6 | cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* |
| splunk | universal_forwarder | 9.1.0 | cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugs.exim.org/show_bug.cgi?id=2421 | Issue Tracking Permissions Required Third Party Advisory |
| https://bugs.php.net/bug.php?id=78338 | Exploit Issue Tracking Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1735494 | Issue Tracking Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/03/msg00014.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQRAHYHLRNMBTPR3KXVM27NSZP3KTOPI/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202006-16 | Third Party Advisory |
| https://vcs.pcre.org/pcre2?view=revision&revision=1092 | Broken Link Patch |