CVE search
Every published CVE plus open-source advisories (NVD, OSV, GitHub), with CVSS, EPSS and whether it is being exploited in the wild (CISA KEV). Updated every few hours. Our scans match these against the technologies they detect.
Every published CVE plus open-source advisories (NVD, OSV, GitHub), with CVSS, EPSS and whether it is being exploited in the wild (CISA KEV). Updated every few hours. Our scans match these against the technologies they detect.
| 22/03/2026 |
| CVE-2024-31497 | MOYENNE5.9 | In PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quick attack in approximately 60 signatures. This is especially important in a scenario where an adversary is able to read messages signed by PuTTY or Pageant. The required set of sig | 15/04/2024 |
| CVE-2023-48795 | MOYENNE5.9 | The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some sec | 18/12/2023 |
| CVE-2021-36367 | ÉLEVÉE8.1 | PuTTY through 0.75 proceeds with establishing an SSH session even if it has never sent a substantive authentication response. This makes it easier for an attacker-controlled SSH server to present a later spoofed authentication prompt (that the attacker can use to capture credential data, and use that data for purposes | 09/07/2021 |
| CVE-2021-33500 | ÉLEVÉE7.5 | PuTTY before 0.75 on Windows allows remote servers to cause a denial of service (Windows GUI hang) by telling the PuTTY window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. NOTE: the same attack methodology may affect some OS-level GUIs on Linux or other pla | 21/05/2021 |
| CVE-2020-14002 | MOYENNE5.9 | PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). | 29/06/2020 |
| CVE-2019-17069 | ÉLEVÉE7.5 | PuTTY before 0.73 might allow remote SSH-1 servers to cause a denial of service by accessing freed memory locations via an SSH1_MSG_DISCONNECT message. | 01/10/2019 |
| CVE-2019-17068 | ÉLEVÉE7.5 | PuTTY before 0.73 mishandles the "bracketed paste mode" protection mechanism, which may allow a session to be affected by malicious clipboard content. | 01/10/2019 |
| CVE-2019-17067 | CRITIQUE9.8 | PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection. | 01/10/2019 |
| CVE-2019-9898 | CRITIQUE9.8 | Potential recycling of random numbers used in cryptography exists within PuTTY before 0.71. | 21/03/2019 |
| CVE-2019-9897 | ÉLEVÉE7.5 | Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71. | 21/03/2019 |
| CVE-2019-9896 | ÉLEVÉE7.8 | In PuTTY versions before 0.71 on Windows, local attackers could hijack the application by putting a malicious help file in the same directory as the executable. | 21/03/2019 |
| CVE-2019-9895 | CRITIQUE9.8 | In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer overflow exists in any kind of server-to-client forwarding. | 21/03/2019 |
| CVE-2019-9894 | ÉLEVÉE7.5 | A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification. | 21/03/2019 |
| CVE-2017-6542 | CRITIQUE9.8 | The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow. | 27/03/2017 |
| CVE-2016-6167 | ÉLEVÉE7.8 | Multiple untrusted search path vulnerabilities in Putty beta 0.67 allow local users to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse (1) UxTheme.dll or (2) ntmarta.dll file in the current working directory. | 30/01/2017 |
| CVE-2015-2157 | FAIBLE2.1 | The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information by reading the memory. | 27/03/2015 |