Kitty
Monthly
Remote code execution in Kitty terminal emulator versions prior to 0.47.0 allows any process or remote peer that can write bytes to the terminal - including SSH sessions, file viewers like cat or less, log tailers, and TUI applications - to execute attacker-supplied Python code inside the running kitty process with full user privileges. Exploitation requires no approval prompt, no shell integration, no clipboard interaction, and no editor involvement, making any rendered untrusted content a viable injection vector. No public exploit identified at time of analysis, but the trivial trigger conditions and broad attack surface make this a high-priority patch.
Command injection in Kitty cross-platform GPU terminal emulator versions prior to 0.47.0 allows remote attackers to execute arbitrary shell commands on a victim's host by sending a crafted escape sequence over an attacker-controlled network connection. The terminal echoes its own error message - including attacker-controlled bytes - back to the shell with CRLF, causing the shell to execute the injected command. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.
Code injection in Kitty terminal emulator versions prior to 0.47.3 allows attacker-controlled bytes - including newline characters - to be reflected back into the user's shell input via the OSC 21 (color-control) escape sequence query reply. An attacker who can cause arbitrary bytes to be written to the terminal (malicious file contents, SSH banner, log entry, web page) can inject and execute shell commands at the victim's privilege level. No public exploit identified at time of analysis, but the underlying class of terminal-escape-injection bugs is well documented and exploitation is straightforward once the unsanitized reply path is known.
Arbitrary file write in Kitty terminal versions 0.47.0 and 0.47.1 allows a remote drag-and-drop source to overwrite files writable by the local kitty user via a TOCTOU symlink race in kitten dnd staging. The flaw stems from openat() calls lacking O_NOFOLLOW when handling duplicate remote basenames on case-sensitive filesystems, letting an attacker-staged symlink redirect writes outside the staging directory. No public exploit identified at time of analysis, and EPSS is very low (0.03%), though user interaction via drag-and-drop is the gating factor.
Heap memory corruption in Kitty cross-platform GPU terminal emulator (versions 0.46.2 and below) allows remote attackers to trigger out-of-bounds heap reads and writes by emitting crafted graphics protocol escape sequences. The flaw stems from a 32-bit integer overflow in handle_compose_command() that lets malicious x_offset/y_offset values bypass bounds checks. No public exploit identified at time of analysis, but the bug requires no user interaction, no authentication, and works against default configurations whenever attacker-controlled bytes can reach the terminal - including via SSH banners, cat'd files, or piped output.
Heap buffer overflow in Kitty terminal versions 0.46.2 and below allows any process able to write to the terminal's standard input to crash the application and potentially achieve remote code execution. The flaw lives in load_image_data() and is triggered by a single APC graphics protocol command declaring PNG format (f=100) with a payload exceeding twice the initial buffer capacity, giving the attacker control over both overflow length and content. No public exploit identified at time of analysis, but the vulnerability has been fixed upstream in version 0.47.0.
Arbitrary file write in kitty terminal versions prior to 0.47.2 allows a child process running inside a kitty session to redirect writes to attacker-controlled filesystem paths. The root cause is a missing O_NOFOLLOW flag in the os.open() call within kitty's file transmission protocol: between the initial symlink validation stat-check and the actual file open, an attacker can insert a symlink, causing the write to follow it to an arbitrary destination - a classic TOCTOU race. No public exploit code exists and EPSS sits at 0.01% (1st percentile), indicating no observed exploitation; however, successful exploitation enables high-integrity-impact file overwrites that can facilitate local privilege escalation. Version 0.47.2 resolves the issue.
open_actions.py in kitty before 0.41.0 does not ask for user confirmation before running a local executable file that may have been linked from an untrusted document (e.g., a document opened in KDE. Rated medium severity (CVSS 4.1), this vulnerability is no authentication required. Public exploit code available.
KiTTY versions 0.76.1.13 and before is vulnerable to command injection via the filename variable, occurs due to insufficient input sanitization and validation, failure to escape special characters,. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the username, occurs due to insufficient bounds checking and input sanitization (at line 2600). Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the hostname, occurs due to insufficient bounds checking and input sanitization. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
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. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and EPSS exploitation probability 53.6%.
In Kitty before 0.26.2, insufficient validation in the desktop notification escape sequence can lead to arbitrary code execution. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
The Graphics Protocol feature in graphics.c in kitty before 0.19.3 allows remote attackers to execute arbitrary code because a filename containing special characters can be included in an error. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Stack-based buffer overflow in the SCP command-line utility in PuTTY before 0.67 and KiTTY 0.66.6.3 and earlier allows remote servers to cause a denial of service (stack memory corruption) or execute. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 28.6%.
Remote code execution in Kitty terminal emulator versions prior to 0.47.0 allows any process or remote peer that can write bytes to the terminal - including SSH sessions, file viewers like cat or less, log tailers, and TUI applications - to execute attacker-supplied Python code inside the running kitty process with full user privileges. Exploitation requires no approval prompt, no shell integration, no clipboard interaction, and no editor involvement, making any rendered untrusted content a viable injection vector. No public exploit identified at time of analysis, but the trivial trigger conditions and broad attack surface make this a high-priority patch.
Command injection in Kitty cross-platform GPU terminal emulator versions prior to 0.47.0 allows remote attackers to execute arbitrary shell commands on a victim's host by sending a crafted escape sequence over an attacker-controlled network connection. The terminal echoes its own error message - including attacker-controlled bytes - back to the shell with CRLF, causing the shell to execute the injected command. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.
Code injection in Kitty terminal emulator versions prior to 0.47.3 allows attacker-controlled bytes - including newline characters - to be reflected back into the user's shell input via the OSC 21 (color-control) escape sequence query reply. An attacker who can cause arbitrary bytes to be written to the terminal (malicious file contents, SSH banner, log entry, web page) can inject and execute shell commands at the victim's privilege level. No public exploit identified at time of analysis, but the underlying class of terminal-escape-injection bugs is well documented and exploitation is straightforward once the unsanitized reply path is known.
Arbitrary file write in Kitty terminal versions 0.47.0 and 0.47.1 allows a remote drag-and-drop source to overwrite files writable by the local kitty user via a TOCTOU symlink race in kitten dnd staging. The flaw stems from openat() calls lacking O_NOFOLLOW when handling duplicate remote basenames on case-sensitive filesystems, letting an attacker-staged symlink redirect writes outside the staging directory. No public exploit identified at time of analysis, and EPSS is very low (0.03%), though user interaction via drag-and-drop is the gating factor.
Heap memory corruption in Kitty cross-platform GPU terminal emulator (versions 0.46.2 and below) allows remote attackers to trigger out-of-bounds heap reads and writes by emitting crafted graphics protocol escape sequences. The flaw stems from a 32-bit integer overflow in handle_compose_command() that lets malicious x_offset/y_offset values bypass bounds checks. No public exploit identified at time of analysis, but the bug requires no user interaction, no authentication, and works against default configurations whenever attacker-controlled bytes can reach the terminal - including via SSH banners, cat'd files, or piped output.
Heap buffer overflow in Kitty terminal versions 0.46.2 and below allows any process able to write to the terminal's standard input to crash the application and potentially achieve remote code execution. The flaw lives in load_image_data() and is triggered by a single APC graphics protocol command declaring PNG format (f=100) with a payload exceeding twice the initial buffer capacity, giving the attacker control over both overflow length and content. No public exploit identified at time of analysis, but the vulnerability has been fixed upstream in version 0.47.0.
Arbitrary file write in kitty terminal versions prior to 0.47.2 allows a child process running inside a kitty session to redirect writes to attacker-controlled filesystem paths. The root cause is a missing O_NOFOLLOW flag in the os.open() call within kitty's file transmission protocol: between the initial symlink validation stat-check and the actual file open, an attacker can insert a symlink, causing the write to follow it to an arbitrary destination - a classic TOCTOU race. No public exploit code exists and EPSS sits at 0.01% (1st percentile), indicating no observed exploitation; however, successful exploitation enables high-integrity-impact file overwrites that can facilitate local privilege escalation. Version 0.47.2 resolves the issue.
open_actions.py in kitty before 0.41.0 does not ask for user confirmation before running a local executable file that may have been linked from an untrusted document (e.g., a document opened in KDE. Rated medium severity (CVSS 4.1), this vulnerability is no authentication required. Public exploit code available.
KiTTY versions 0.76.1.13 and before is vulnerable to command injection via the filename variable, occurs due to insufficient input sanitization and validation, failure to escape special characters,. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the username, occurs due to insufficient bounds checking and input sanitization (at line 2600). Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
KiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the hostname, occurs due to insufficient bounds checking and input sanitization. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
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. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and EPSS exploitation probability 53.6%.
In Kitty before 0.26.2, insufficient validation in the desktop notification escape sequence can lead to arbitrary code execution. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
The Graphics Protocol feature in graphics.c in kitty before 0.19.3 allows remote attackers to execute arbitrary code because a filename containing special characters can be included in an error. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Stack-based buffer overflow in the SCP command-line utility in PuTTY before 0.67 and KiTTY 0.66.6.3 and earlier allows remote servers to cause a denial of service (stack memory corruption) or execute. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 28.6%.