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By the Year

In 2022 there have been 0 vulnerabilities in Winscp . Last year Winscp had 1 security vulnerability published. Right now, Winscp is on track to have less security vulnerabilities in 2022 than it did last year.

Year Vulnerabilities Average Score
2022 0 0.00
2021 1 9.80
2020 1 9.80
2019 5 6.46
2018 0 0.00

It may take a day or so for new Winscp vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Winscp Security Vulnerabilities

WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL

CVE-2021-3331 9.8 - Critical - January 27, 2021

WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)

Buffer overflow in WinSCP 5.17.8

CVE-2020-28864 9.8 - Critical - November 23, 2020

Buffer overflow in WinSCP 5.17.8 allows a malicious FTP server to cause a denial of service or possibly have other unspecified impact via a long file name.

Classic Buffer Overflow

An issue was discovered in OpenSSH 7.9

CVE-2019-6109 6.8 - Medium - January 31, 2019

An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

Output Sanitization

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output

CVE-2019-6110 6.8 - Medium - January 31, 2019

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

Inappropriate Encoding for Output Context

An issue was discovered in OpenSSH 7.9

CVE-2019-6111 5.9 - Medium - January 31, 2019

An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).

Directory traversal

In WinSCP before 5.14 beta, due to missing validation, the scp implementation

CVE-2018-20684 7.5 - High - January 10, 2019

In WinSCP before 5.14 beta, due to missing validation, the scp implementation would accept arbitrary files sent by the server, potentially overwriting unrelated files. This affects TSCPFileSystem::SCPSink in core/ScpFileSystem.cpp.

Improper Input Validation

In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of

CVE-2018-20685 5.3 - Medium - January 10, 2019

In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.

AuthZ

Integer overflow in PuTTY 0.62 and earlier, WinSCP before 5.1.6, and other products

CVE-2013-4852 - August 19, 2013

Integer 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 execute arbitrary code in certain applications that use PuTTY via a negative size value in an RSA key signature during the SSH handshake, which triggers a heap-based buffer overflow.

Numeric Errors

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