libssh 関連製品全体の CVE とセキュリティ脆弱性情報を集約し、CVSS、EPSS、公開日、脆弱性情報データを掲載しています。
公開された問題は vendor risk memory corruption、バッファオーバーフロー, and パス処理の欠陥 に関連することが多く、vendor surface software deployment and vendor surface production workloads の文脈で アプリケーションクラッシュ and ファイル上書き などの暴露リスクを伴う場合があります。
掲載データは公開脆弱性情報とセキュリティ公告に基づき、過去の暴露面と修補優先度の評価に利用できます。
| CVE | 概要 | ソース | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|---|
| CVE-2020-16135 | libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL. | [email protected] | 5.9 | 4.11% | 2020-07-29 | 2026-06-16 |
| CVE-2020-1730 | A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability. | [email protected] | 5.3 | 3.06% | 2020-04-13 | 2026-06-16 |
| CVE-2019-14889 | A flaw was found with the libssh API function ssh_scp_new() in versions before 0.9.3 and before 0.8.8. When the libssh SCP client connects to a server, the scp command, which includes a user-provided path, is executed on the server-side. In case the library is used in a way where users can influence the third parameter of the function, it would become possible for an attacker to inject arbitrary commands, leading to a compromise of the remote target. | [email protected] | 8.8 | 3.17% | 2019-12-10 | 2026-06-16 |
| CVE-2018-10933 | A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access. | [email protected] | 9.1 | 91.79% | 2018-10-17 | 2026-06-16 |
| CVE-2016-0739 | libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug." | [email protected] | 5.9 | 2.43% | 2016-04-13 | 2026-06-16 |
| CVE-2015-3146 | The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet. | [email protected] | 7.5 | 3.91% | 2016-04-13 | 2026-06-16 |
| CVE-2014-8132 | Double free vulnerability in the ssh_packet_kexinit function in kex.c in libssh 0.5.x and 0.6.x before 0.6.4 allows remote attackers to cause a denial of service via a crafted kexinit packet. | [email protected] | 5.0 | 5.15% | 2014-12-28 | 2026-06-16 |
| CVE-2014-0017 | The RAND_bytes function in libssh before 0.6.3, when forking is enabled, does not properly reset the state of the OpenSSL pseudo-random number generator (PRNG), which causes the state to be shared between children processes and allows local users to obtain sensitive information by leveraging a pid collision. | [email protected] | 1.9 | 0.36% | 2014-03-14 | 2026-06-16 |
| CVE-2013-0176 | The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a "Client: Diffie-Hellman Key Exchange Init" packet. | [email protected] | 4.3 | 3.05% | 2013-02-05 | 2026-06-16 |
| CVE-2012-6063 | Double free vulnerability in the sftp_mkdir function in sftp.c in libssh before 0.5.3 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors, a different vector than CVE-2012-4559. | [email protected] | 7.5 | 3.58% | 2012-11-30 | 2026-06-16 |
| CVE-2012-4562 | Multiple integer overflows in libssh before 0.5.3 allow remote attackers to cause a denial of service (infinite loop or crash) and possibly execute arbitrary code via unspecified vectors, which triggers a buffer overflow, infinite loop, or possibly some other unspecified vulnerabilities. | [email protected] | 7.5 | 12.85% | 2012-11-30 | 2026-06-16 |
| CVE-2012-4561 | The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers to cause a denial of service (crash) via unspecified vectors. | [email protected] | 5.0 | 4.75% | 2012-11-30 | 2026-06-16 |
| CVE-2012-4560 | Multiple buffer overflows in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via unspecified vectors. | [email protected] | 7.5 | 6.45% | 2012-11-30 | 2026-06-16 |
| CVE-2012-4559 | Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors. | [email protected] | 6.8 | 5.18% | 2012-11-30 | 2026-06-16 |