A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper variable initialization that may result in an NULL pointer read. An attacker could exploit this vulnerability by sending a crafted email to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.
総合評価: CVE-2021-1405 は中リスク（62.2/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 3.16%、86 パーセンタイル） 根拠: 直近 1 日で EPSS が +2.02% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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。
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 | 1.13% | 3.16% | +2.02% |
| 2 | 2026-06-12 | 1.32% | 1.13% | -0.19% |
| 3 | 2026-05-28 | — | 1.32% | — |
EPSS の全履歴 （全 26 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] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2021-1405: 1 source package rows (clamav); 30 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 9, open 21. | https://security.alpinelinux.org/vuln/CVE-2021-1405 |
debian
|
not yet assigned | CVE-2021-1405 not yet assigned priority: Debian including 1 source packages (clamav), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-1405 |
gentoo
|
low | CVE-2021-1405: 1 GLSA(s) (202104-07), 1 atom(s) (app-antivirus/clamav); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-1405 |
suse
|
high | CVE-2021-1405 severity important: SUSE including 34 source package names (clamav-0.103.11-150600.16.7, clamav-0.103.2-0.20.35.1, …), 121 product×package rows across 45 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-SAP-Azure-LI-BYOS-Production, … (45 product lines)): Fixed 121. | https://www.suse.com/security/cve/CVE-2021-1405/ |
ubuntu
|
medium | CVE-2021-1405 medium priority: Ubuntu including 1 source packages (clamav), 7 status rows across 7 suites (bionic, focal, groovy, hirsute, trusty, upstream, xenial): released 5, needs-triage 1, not-affected 1. | https://ubuntu.com/security/CVE-2021-1405 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| clamav | clamav | <= 0.103.1 | cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html | Release Notes Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/04/msg00012.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202104-07 | Third Party Advisory |