Vulnerability in github.com/bishopfox/sliver (CVE-2026-34227)
Summary
Vulnerability in github.com/bishopfox/sliver (CVE-2026-34227). Successful exploitation can lead to full system takeover. Exploitable via ntds.dit. Mitigation: upgrade to 1.7.4 or later.
Original description
The description as published by the source.
Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to version 1.7.4, a single click on a malicious link gives an unauthenticated attacker immediate, silent control over every active C2 session or beacon, capable of exfiltrating all collected target data (e.g. SSH keys, ntds.dit) or destroying the entire compromised infrastructure, entirely through the operator's own browser. This issue has been patched in version 1.7.4.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-34227 has been found in github.com/bishopfox/sliver.
Attackers can target a specific entry point like ntds.dit over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: upgrade github.com/bishopfox/sliver to 1.7.4 or later.
If unsure, ask your IT team or search "github.com/bishopfox/sliver CVE-2026-34227" on the vendor's site.
CVE-2026-34227 (github.com/bishopfox/sliver) — CWE-306 / CVSS v3 8.8
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: ntds.dit / list_sessions_and_beacons / fs_ls / fs_pwd
Patched: 1.7.4 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-306) exists in github.com/bishopfox/sliver. Attackers reach the vulnerable code path via ntds.dit without authentication.
Check the vendor advisory for the affected versions of github.com/bishopfox/sliver. Attack surface: ntds.dit / list_sessions_and_beacons / fs_ls / fs_pwd.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to 1.7.4.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/bishopfox/sliver' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'github.com/bishopfox/sliver' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/bishopfox/sliverを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/bishopfox/sliver to 1.7.4ステージング環境で 1.7.4 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com