CVE-2019-17263

In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue

• CWE-125

• http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.htmlExploit, Third Party Advisory, VDB Entry
• https://github.com/libyal/libfwsi/compare/20181227...20191006Patch, Third Party Advisory
• https://github.com/libyal/libfwsi/issues/13Exploit, Third Party Advisory
• http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.htmlExploit, Third Party Advisory, VDB Entry
• https://github.com/libyal/libfwsi/compare/20181227...20191006Patch, Third Party Advisory
• https://github.com/libyal/libfwsi/issues/13Exploit, Third Party Advisory

Published

Oct 6, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2019-17258IrfanView 4.53 allows Data from a Faulting Address to contro…7.8
• CVE-2019-17259KMPlayer 4.2.2.31 allows a User Mode Write AV starting at ut…7.8
• CVE-2019-1726A vulnerability in the CLI of Cisco NX-OS Software could all…7.8
• CVE-2019-17260MPC-HC through 1.7.13 allows a Read Access Violation on a Bl…7.8
• CVE-2019-17261XnView Classic 2.49.1 allows a User Mode Write AV starting a…7.8
• CVE-2019-17262XnView Classic 2.49.1 allows a User Mode Write AV starting a…7.8
• CVE-2019-17264In libyal liblnk before 20191006, liblnk_location_informatio…3.3
• CVE-2019-17266libsoup from versions 2.65.1 until 2.68.1 have a heap-based …9.8
• CVE-2019-17267A Polymorphic Typing issue was discovered in FasterXML jacks…9.8
• CVE-2019-17268The omniauth-weibo-oauth2 gem 0.4.6 for Ruby, as distributed…9.8
• CVE-2019-17269Intellian Remote Access 3.18 allows remote attackers to exec…9.8
• CVE-2019-1727A vulnerability in the Python scripting subsystem of Cisco N…6.7