PU
Vendor
Putty
1 product with CVEs on record
36
CVEs
0
On KEV
0
New 30D
Products
Recent CVEs
CVEProductCVSSEPSSPublishedSummary
CVE-2026-48852
PU
PuTTY
PuTTY
3.7
0%
May 25PuTTY 0.71 before 0.84 has an assertion failure in ECDSA signature verification
CVE-2026-48851
PU
PuTTY
PuTTY
3.1
0%
May 25PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session
CVE-2026-48850
PU
PuTTY
PuTTY
5.9
0%
May 25PuTTY 0.72 before 0.84 has a double free in RSA KEX
CVE-2026-4115
PU
PuTTY
Putty
3.7
1%
Mar 22PuTTY Ed25519 Signature ecc-ssh.c eddsa_verify signature verification
CVE-2024-31497
PU
Putty
Putty
5.9
6%
Apr 15In 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…
CVE-2023-48795
PU
Putty
Putty
5.9
94%
Dec 18The 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…
CVE-2021-36367
PU
Putty
Putty
8.1
1%
Jul 9PuTTY through 0.75 proceeds with establishing an SSH session even if it has never sent a substantive authentication response
CVE-2021-33500
PU
Putty
Putty
7.5
2%
May 21PuTTY 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…
CVE-2020-14002
PU
Putty
Putty
5.9
3%
Jun 29PuTTY 0.68 through 0.73 has an Observable Discrepancy leading to an information leak in the algorithm negotiation
CVE-2019-17069
PU
Putty
Putty
7.5
2%
Oct 1PuTTY 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
CVE-2019-17068
PU
Putty
Putty
7.5
2%
Oct 1PuTTY before 0.73 mishandles the "bracketed paste mode" protection mechanism, which may allow a session to be affected by malicious clipboard content
CVE-2019-17067
PU
Putty
Putty
9.8
2%
Oct 1PuTTY 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
CVE-2019-9898
PU
Putty
Putty
9.8
4%
Mar 21Potential recycling of random numbers used in cryptography exists within PuTTY before 0.71
CVE-2019-9897
PU
Putty
Putty
7.5
3%
Mar 21Multiple denial-of-service attacks that can be triggered by writing to the terminal exist in PuTTY versions before 0.71
CVE-2019-9896
PU
Putty
Putty
7.8
1%
Mar 21In 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
CVE-2019-9895
PU
Putty
Putty
9.8
2%
Mar 21In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer overflow exists in any kind of server-to-client forwarding
CVE-2019-9894
PU
Putty
Putty
7.5
2%
Mar 21A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification
CVE-2017-6542
PU
Putty
Putty
9.8
22%
Mar 27The 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…
CVE-2016-6167
PU
Putty
Putty
7.8
1%
Jan 30Multiple 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…
CVE-2015-2157
PU
Putty
Putty
–
1%
Mar 27The (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…
CVE-2011-4607
PU
Putty
Putty
–
0%
Aug 23PuTTY 0.59 through 0.61 does not clear sensitive process memory when managing user replies that occur during keyboard-interactive authentication, which might allow local users to…
CVE-2013-4852
PU
Putty
Putty
–
3%
Aug 19Integer overflow in PuTTY 0.62 and earlier, WinSCP before 5.1.6, and other products that use PuTTY allows remote SSH servers to cause a denial of service (crash) and possibly…
CVE-2013-4208
PU
Putty
Putty
–
0%
Aug 19The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory,…
CVE-2013-4207
PU
Putty
Putty
–
2%
Aug 19Buffer overflow in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) via an invalid DSA signature that is not properly handled during…
CVE-2013-4206
PU
Putty
Putty
–
2%
Aug 19Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory…
CVE-2006-7162
PU
Putty
Putty
–
0%
Mar 7PuTTY 0.59 and earlier uses weak file permissions for (1) ppk files containing private keys generated by puttygen and (2) session logs created by putty, which allows local users…
CVE-2005-0467
PU
Putty
Putty
–
4%
Feb 21Multiple integer overflows in the (1) sftp_pkt_getstring and (2) fxp_readdir_recv functions in the PSFTP and PSCP clients for PuTTY 0.56, and possibly earlier versions, allow…
CVE-2004-1008
PU
Putty
Putty
–
7%
Jan 10Integer signedness error in the ssh2_rdpkt function in PuTTY before 0.56 allows remote attackers to execute arbitrary code via a SSH2_MSG_DEBUG packet with a modified stringlen…
CVE-2004-1440
PU
Putty
Putty
–
4%
Dec 31Multiple heap-based buffer overflows in the modpow function in PuTTY before 0.55 allow (1) remote attackers to execute arbitrary code via an SSH2 packet with a base argument that…
CVE-2003-0069
PU
Putty
Putty
–
2%
Mar 18The PuTTY terminal emulator 0.53 allows attackers to modify the window title via a certain character escape sequence and then insert it back to the command line in the user's…
CVE-2003-0048
PU
Putty
Putty
–
0%
Feb 19PuTTY 0.53b and earlier does not clear logon credentials from memory, including plaintext passwords, which could allow attackers with access to memory to steal the SSH credentials
CVE-2002-1357
PU
Putty
Putty
–
10%
Dec 23Multiple SSH2 servers and clients do not properly handle packets or data elements with incorrect length specifiers, which may allow remote attackers to cause a denial of service…
CVE-2002-1360
PU
Putty
Putty
–
6%
Dec 23Multiple SSH2 servers and clients do not properly handle strings with null characters in them when the string length is specified by a length field, which could allow remote…
CVE-2002-1359
PU
Putty
Putty
–
80%
Dec 23Multiple SSH2 servers and clients do not properly handle large packets or large fields, which may allow remote attackers to cause a denial of service or possibly execute arbitrary…
CVE-2002-1358
PU
Putty
Putty
–
6%
Dec 23Multiple SSH2 servers and clients do not properly handle lists with empty elements or strings, which may allow remote attackers to cause a denial of service or possibly execute…
CVE-2000-0476
PU
Putty
Putty
–
3%
Jun 1xterm, Eterm, and rxvt allow an attacker to cause a denial of service by embedding certain escape characters which force the window to be resized