CVE-2026-20871
Use after free in Desktop Windows Manager allows an authorized attacker to elevate privileges locally.
CVSS
7.8
Alto
EPSS
4.1%
p90
KEV
—
Exploit Today
27
0-100
Publicado: 13 ene 2026 · Última mod.: 30 jul 2026 · CWE-416
4.0%EPSS · 30 días4.1%
2026-07-162026-08-12
Use after free in Desktop Windows Manager allows an authorized attacker to elevate privileges locally.
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-119373.1 BAJ—
——0IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 and IBM Verify Identity Access Container 11.0 through 11.0.3 and IBM Security Verify Access Container 10.0 through 10.0.9.2 Reverse Proxy in certain configurations is vulnerable to a denial of service attack.1dCVE-2026-195485.5 MED—
——0Multiple Use-After-Free vulnerabilities were found in the add_archive_element function in ld/ldmain.c of the GNU linker (ld), a component of binutils. The root cause is that plugin_maybe_claim() in ld/plugin.c frees the original BFD object via bfd_close/_bfd_delete_bfd when entry->the_bfd->my_archive == NULL, but the caller retains both the original abfd parameter and a shallow copy (orig_input.the_bfd) as dangling pointers. These dangling pointers are subsequently dereferenced at three distinct locations in add_archive_element:
1. Line ~1442: accessing abfd->my_archive via bfd_usrdata(abfd->my_archive)
2. Line ~1493: multiple accesses to abfd and abfd->my_archive in a conditional check and bfd_get_filename call
3. Line ~1525: dereferencing the shallow copy orig_input.the_bfd->my_archive in trace/verbose logging
The vulnerability is triggered when LTO plugins are active (link_info.lto_plugin_active is true) and the input object has abfd->my_archive == NULL, which is a valid state for standalone object files. Red Hat builds binutils with --enable-plugins and --enable-lto, confirming the vulnerable code path is compiled in and reachable.
An attacker who can supply a crafted object or archive file to a build process using LTO-enabled linking could exploit this flaw to cause a denial of service (linker crash via segmentation fault). Arbitrary code execution is theoretically possible through heap manipulation but is substantially mitigated by hardening measures including stack protector, FORTIFY_SOURCE, ASLR, and PIE.
The attack surface is limited to build-time environments — the linker is a development tool not exposed in production runtime. The most realistic exploitation scenario is a supply chain attack introducing a crafted object file as a build dependency in CI/CD pipelines or development environments.2dCVE-2026-195608.8 ALT23.3%
——7Use after free in Blink in Google Chrome prior to 151.0.7922.137 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)1dCVE-2026-195598.8 ALT23.3%
——7Use after free in HTML in Google Chrome prior to 151.0.7922.137 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)1dCVE-2026-195587.5 ALT8.2%
——2Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: High)1dCVE-2026-195578.3 ALT16.5%
——5Use after free in TabStrip in Google Chrome on Mac prior to 151.0.7922.137 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)1d