Debian vulnerabilities
We track 1,111 vulnerabilities in Debian products across 10 products. 1,094 are rated high or critical, and 123 have been exploited in real attacks. The most recent was published on November 6, 2026.
Latest Debian vulnerabilities
- 7.5 High severity
libapreq2: Buffer Copy without Checking Size of Input
A flaw in Apache libapreq2 versions 2.16 and earlier could cause a buffer overflow while processing multipart form uploads. A remote attacker could send a request causing a process crash which could lead to a denial of service attack.
- 8.8 High severity
Apple iOS and macOS Out-of-Bounds Write Exploited
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.6.1 and iPadOS 15.6.1, macOS Monterey 12.5.1, Safari 15.6.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware
- 7.8 High severity
Kernel: Use After Free
A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use this flaw to crash the system or potentially escalate
- 7.8 High severity
VMware Tools: Improper Privilege Management
VMware Tools (12.0.0, 11.x.y and 10.x.y) contains a local privilege escalation vulnerability. A malicious actor with local non-administrative access to the Guest OS can escalate privileges as a root user in the virtual machine.
- 7.5 High severity
Improper Input Validation vulnerability in HTTP/2 frame handling of Apache Traffic Server…
Improper Input Validation vulnerability in HTTP/2 frame handling of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.
- 7.5 High severity
Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server…
Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.
- 7.5 High severity
Improper Input Validation vulnerability in handling the Transfer-Encoding header of Apache…
Improper Input Validation vulnerability in handling the Transfer-Encoding header of Apache Traffic Server allows an attacker to poison the cache. This issue affects Apache Traffic Server 8.0.0 to 9.0.2.
- 7.5 High severity
Improper Input Validation vulnerability in HTTP/1.1 header parsing of Apache Traffic Server…
Improper Input Validation vulnerability in HTTP/1.1 header parsing of Apache Traffic Server allows an attacker to send invalid headers. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.
- 7.5 High severity
Apache Traffic Server: Inconsistent Interpretation of HTTP Requests
Improper Input Validation vulnerability in HTTP/2 request validation of Apache Traffic Server allows an attacker to create smuggle or cache poison attacks. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.
- 9.8 Critical severity
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: Out-of-bounds Write
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code
- 8.0 High severity
pgjdbc: Improper Neutralization of Special Elements used in an SQL Command
PostgreSQL JDBC Driver (PgJDBC for short) allows Java programs to connect to a PostgreSQL database using standard, database independent Java code. The PGJDBC implementation of the `java.sql.ResultRow.refreshRow()` method is not performing escaping of column na
- 8.8 High severity
Django: Download of Code Without Integrity Check
An issue was discovered in the HTTP FileResponse class in Django 3.2 before 3.2.15 and 4.0 before 4.0.7. An application is vulnerable to a reflected file download (RFD) attack that sets the Content-Disposition header of a FileResponse when the filename is deri
- 8.1 High severity
Connman: Use After Free
In ConnMan through 1.41, a man-in-the-middle attack against a WISPR HTTP query could be used to trigger a use-after-free in WISPR handling, leading to crashes or code execution.
- 9.8 Critical severity
Connman: Out-of-bounds Write
In ConnMan through 1.41, remote attackers able to send HTTP requests to the gweb component are able to exploit a heap-based buffer overflow in received_data to execute code.
- 7.5 High severity
GnuTLS: Double Free
A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function.
- 8.0 High severity
Groupware: Use of Externally-Controlled Input to Select Classes or Code
Horde Groupware Webmail Edition through 5.2.22 allows a reflection injection attack through which an attacker can instantiate a driver class. This then leads to arbitrary deserialization of PHP objects.
- 8.8 High severity
LibreOffice: Inadequate Encryption Strength
LibreOffice supports the storage of passwords for web connections in the user’s configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in LibreOffice existed where master key was poorly encoded resultin
- 7.5 High severity
LibreOffice: Use of Insufficiently Random Values
LibreOffice supports the storage of passwords for web connections in the user’s configuration database. The stored passwords are encrypted with a single master key provided by the user. A flaw in LibreOffice existed where the required initialization vector for
- 8.1 High severity
tzinfo: Improper Limitation of a Pathname to a Restricted Directory
TZInfo is a Ruby library that provides access to time zone data and allows times to be converted using time zone rules. Versions prior to 0.36.1, as well as those prior to 1.2.10 when used with the Ruby data source tzinfo-data, are vulnerable to relative path
- 7.8 High severity
GStreamer: Integer Overflow or Wraparound
DOS / potential heap overwrite in qtdemux using zlib decompression. Integer overflow in qtdemux element in qtdemux_inflate function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlyi
- 7.8 High severity
GStreamer: Integer Overflow or Wraparound
DOS / potential heap overwrite in mkv demuxing using HEADERSTRIP decompression. Integer overflow in matroskaparse element in gst_matroska_decompress_data function which causes a heap overflow. Due to restrictions on chunk sizes in the matroskademux element, th
- 7.8 High severity
GStreamer: Integer Overflow or Wraparound
DOS / potential heap overwrite in mkv demuxing using lzo decompression. Integer overflow in matroskademux element in lzo decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and
- 7.8 High severity
GStreamer: Integer Overflow or Wraparound
DOS / potential heap overwrite in mkv demuxing using bzip decompression. Integer overflow in matroskademux element in bzip decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, an
- 7.8 High severity
GStreamer: Integer Overflow or Wraparound
DOS / potential heap overwrite in mkv demuxing using zlib decompression. Integer overflow in matroskademux element in gst_matroska_decompress_data function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the lib
- 7.8 High severity
GStreamer: Integer Overflow or Wraparound
Integer overflow in avidemux element in gst_avi_demux_invert function which allows a heap overwrite while parsing avi files. Potential for arbitrary code execution through heap overwrite.
- 7.8 High severity
GStreamer: Integer Overflow or Wraparound
Integer overflow in matroskademux element in gst_matroska_demux_add_wvpk_header function which allows a heap overwrite while parsing matroska files. Potential for arbitrary code execution through heap overwrite.
- 7.5 High severity
Apache Xalan-J: Incorrect Conversion between Numeric Types
The Apache Xalan Java XSLT library is vulnerable to an integer truncation issue when processing malicious XSLT stylesheets. This can be used to corrupt Java class files generated by the internal XSLTC compiler and execute arbitrary Java bytecode. Users are rec
- 8.8 High severity
Dovecot: Improper Authentication
An issue was discovered in the auth component in Dovecot 2.2 and 2.3 before 2.3.20. When two passdb configuration entries exist with the same driver and args settings, incorrect username_filter and mechanism settings can be applied to passdb definitions. These
- 9.1 Critical severity
Mbed TLS: Out-of-bounds Read
An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a
- 8.1 High severity
Node: Improper Neutralization of Special Elements used in an OS Command
A OS Command Injection vulnerability exists in Node.js versions <14.20.0, <16.20.0, <18.5.0 due to an insufficient IsAllowedHost check that can easily be bypassed because IsIPAddress does not properly check if an IP address is invalid before making DBS request
- 7.8 High severity
git: Uncontrolled Search Path Element
Git is a distributed revision control system. Git prior to versions 2.37.1, 2.36.2, 2.35.4, 2.34.4, 2.33.4, 2.32.3, 2.31.4, and 2.30.5, is vulnerable to privilege escalation in all platforms. An unsuspecting user could still be affected by the issue reported i
- 8.8 High severity
Qemu: Use of Uninitialized Resource
softmmu/physmem.c in QEMU through 7.0.0 can perform an uninitialized read on the translate_fail path, leading to an io_readx or io_writex crash. NOTE: a third party states that the Non-virtualization Use Case in the qemu.org reference applies here, i.e., "Bugs
- 7.5 High severity
Mat2: Improper Limitation of a Pathname to a Restricted Directory
mat2 (aka metadata anonymisation toolkit) before 0.13.0 allows ../ directory traversal during the ZIP archive cleaning process. This primarily affects mat2 web instances, in which clients could obtain sensitive information via a crafted archive.
- 7.5 High severity
Eclipse Jetty: Insufficient Resource Pool
In Eclipse Jetty HTTP/2 server implementation, when encountering an invalid HTTP/2 request, the error handling has a bug that can wind up not properly cleaning up the active connections and associated resources. This can lead to a Denial of Service scenario wh
- 9.8 Critical severity
https://github.com/curl/curl: Incorrect Default Permissions
When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by finalizing the operation with a rename from a temporary name to the final target file name.In that rename operation, it might accidentally *widen* the perm
- 7.5 High severity
moment: Inefficient Regular Expression Complexity
moment is a JavaScript date library for parsing, validating, manipulating, and formatting dates. Affected versions of moment were found to use an inefficient parsing algorithm. Specifically using string-to-date parsing in moment (more specifically rfc2822 pars
- 7.1 High severity
Linux: Exposure of Sensitive Information to an Unauthorized Actor
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with
- 7.1 High severity
Linux: Exposure of Sensitive Information to an Unauthorized Actor
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with
- 7.1 High severity
Linux: Improper Removal of Sensitive Information Before Storage or Transfer
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with
- 7.1 High severity
Linux: Missing Release of Memory after Effective Lifetime
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with