Known vulnerabilities in Red Hat Enterprise Linux AppStream AUS (v.8.6)

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CVE list

CVE	Summary	Score	Published
CVE-2026-56208	Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode	7.6 High	Jun 19, 2026
CVE-2026-12329	Memory safety bug fixed in Thunderbird ESR 140.12	5.3 Medium	Jun 16, 2026
CVE-2026-12328	Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and…	8.1 High	Jun 16, 2026
CVE-2026-12299	JIT miscompilation in the DOM: Core & HTML component	5.4 Medium	Jun 16, 2026
CVE-2026-12298	Memory safety bug fixed in Thunderbird 152	5.4 Medium	Jun 16, 2026
CVE-2026-12297	Sandbox escape due to incorrect boundary conditions in the Networking component	9.6 Critical	Jun 16, 2026
CVE-2026-12296	Sandbox escape in the Security: Process Sandboxing component	9.6 Critical	Jun 16, 2026
CVE-2026-12295	Sandbox escape in the DOM: Navigation component	9.6 Critical	Jun 16, 2026
CVE-2026-12294	Sandbox escape in the DOM: Workers component	9.6 Critical	Jun 16, 2026
CVE-2026-12292	Incorrect boundary conditions in the Web Audio component	8.1 High	Jun 16, 2026
CVE-2026-12291	Use-after-free in the Networking: HTTP component	8.8 High	Jun 16, 2026
CVE-2026-12290	Memory safety bug fixed in Thunderbird 152	8.1 High	Jun 16, 2026
CVE-2026-12289	Privilege escalation in the Graphics: WebRender component	8.8 High	Jun 16, 2026
CVE-2026-11774	389-ds-base: 389-ds-base: integer overflow in sasl packet length bypasses size limit leading to heap buffer overflow	7.6 High	Jun 11, 2026
CVE-2026-49975	Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service…	Not rated	Jun 8, 2026
CVE-2026-50264	Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat	7.8 High	Jun 5, 2026
CVE-2026-50261	Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()	7.8 High	Jun 5, 2026
CVE-2026-50260	Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter()	7.8 High	Jun 5, 2026
CVE-2026-50258	Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels	7.8 High	Jun 5, 2026
CVE-2026-50259	Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing	7.8 High	Jun 5, 2026
CVE-2026-50256	Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch	7.8 High	Jun 5, 2026
CVE-2026-50257	Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()	7.8 High	Jun 5, 2026
CVE-2026-10118	Poppler: integer overflow in poppler splashoutputdev::tilingpatternfill leads to heap buffer overflow via unchecked dimension multiplication	7.8 High	Jun 1, 2026
CVE-2026-4408	Samba: remote code execution in samr	9.0 Critical	May 28, 2026
CVE-2026-1933	Samba: missing access check on reparse point operations	7.1 High	May 27, 2026

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