GNU vulnerabilities
We track 100 vulnerabilities in GNU products across 26 products. 100 are rated high or critical, and 5 have been exploited in real attacks. The most recent was published on October 11, 2026.
Latest GNU vulnerabilities
- 7.5 High severity
cflow: Improper Resource Shutdown or Release
A vulnerability was found in GNU cflow 1.7. It has been rated as problematic. This issue affects the function func_body/parse_variable_declaration of the file parser.c. The manipulation leads to denial of service. The exploit has been disclosed to the public a
- 7.8 High severity
Org Mode: Improper Neutralization of Special Elements used in an OS Command
org-babel-execute:latex in ob-latex.el in Org Mode through 9.6.1 for GNU Emacs allows attackers to execute arbitrary commands via a file name or directory name that contains shell metacharacters.
- 7.8 High severity
Emacs: Improper Control of Generation of Code
emacsclient-mail.desktop in Emacs 28.1 through 28.2 is vulnerable to Emacs Lisp code injections through a crafted mailto: URI with unescaped double-quote characters. It is fixed in 29.0.90.
- 7.8 High severity
Emacs: Improper Neutralization of Special Elements used in an OS Command
emacsclient-mail.desktop in Emacs 28.1 through 28.2 is vulnerable to shell command injections through a crafted mailto: URI. This is related to lack of compliance with the Desktop Entry Specification. It is fixed in 29.0.90
- 7.8 High severity
Emacs: Improper Encoding or Escaping of Output
An issue was discovered in GNU Emacs through 28.2. htmlfontify.el has a command injection vulnerability. In the hfy-istext-command function, the parameter file and parameter srcdir come from external input, and parameters are not escaped. If a file name or dir
- 7.3 High severity
Emacs: Improper Neutralization of Special Elements used in a Command
An issue was discovered in GNU Emacs through 28.2. In ruby-mode.el, the ruby-find-library-file function has a local command injection vulnerability. The ruby-find-library-file function is an interactive function, and bound to C-c C-f. Inside the function, the
- 9.8 Critical severity
Emacs: Improper Neutralization of Special Elements used in an OS Command
GNU Emacs through 28.2 allows attackers to execute commands via shell metacharacters in the name of a source-code file, because lib-src/etags.c uses the system C library function in its implementation of the etags program. For example, a victim may use the "et
- 9.8 Critical severity
C Library: Buffer Copy without Checking Size of Input
A vulnerability was found in GNU C Library 2.38. It has been declared as critical. This vulnerability affects the function __monstartup of the file gmon.c of the component Call Graph Monitor. The manipulation leads to buffer overflow. It is recommended to appl
- 9.8 Critical severity
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: Out-of-bounds Write
sprintf in the GNU C Library (glibc) 2.37 has a buffer overflow (out-of-bounds write) in some situations with a correct buffer size. This is unrelated to CWE-676. It may write beyond the bounds of the destination buffer when attempting to write a padded, thous
- 7.8 High severity
Emacs: Improper Neutralization of Special Elements used in an OS Command
GNU Emacs through 28.2 allows attackers to execute commands via shell metacharacters in the name of a source-code file, because lib-src/etags.c uses the system C library function in its implementation of the ctags program. For example, a victim may use the "ct
- 7.8 High severity
Pspp: Out-of-bounds Write
An issue was discovered in PSPP 1.6.2. There is a heap-based buffer overflow at the function read_string in utilities/pspp-dump-sav.c, which allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact.
- 7.8 High severity
Pspp: Out-of-bounds Write
An issue was discovered in PSPP 1.6.2. There is a heap-based buffer overflow at the function read_bytes_internal in utilities/pspp-dump-sav.c, which allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact. Th
- 8.8 High severity
An arbitrary file write vulnerability was found in GNU gzip's zgrep utility.
An arbitrary file write vulnerability was found in GNU gzip's zgrep utility. When zgrep is applied on the attacker's chosen file name (for example, a crafted file name), this can overwrite an attacker's content to an arbitrary attacker-selected file. This flaw
- 7.5 High severity
Inetutils: NULL Pointer Dereference
telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available thro
- 7.5 High severity
Libredwg: Reachable Assertion
There is an Assertion `int decode_preR13_entities(BITCODE_RL, BITCODE_RL, unsigned int, BITCODE_RL, BITCODE_RL, Bit_Chain *, Dwg_Data *' failed at dwg2dxf: decode.c:5801 in libredwg v0.12.4.4608.
- 9.8 Critical severity
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: Buffer Copy without Checking Size of Input
The deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its hostname argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a deni
- 9.8 Critical severity
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: Buffer Copy without Checking Size of Input
The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denia
- 10.0 High severity
GNU Bash OS Command Injection Exploited
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attackers to execute arbitrary commands via a crafted environment, as demonstrated by vectors involving the ForceCommand fe
- 9.8 Critical severity
GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited
GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of environment variables, which allows remote attackers to write to files or possibly have unknown other impact via a crafted environment, as
- 9.8 Critical severity
GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Exploited
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature