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CVE-2026-115559

imaplib STARTTLS serves plaintext bytes buffered before the handshake as if they came over TLS

IMAP4.starttls() wraps the socket in TLS but leaves self._readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv() as the tagged OK to STARTTLS are returned by readline() after the handshake, so the client treats them as the first responses on the protected channel. A network attacker who cannot break TLS can append forged lines after the server's OK, let the handshake complete with the real server and a valid certificate, and have the client accept the forged CAPABILITY and the forged tagged completion of the next command. This is the STARTTLS command/response injection class of CVE-2011-0411.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
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CVE-2026-0175

In multiple locations, there is a possible way to bypass key authorization policies during wrapped key import due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
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CVE-2026-40216

Out-of-bounds read for some Hyperscan before version v5.4.2.1 within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
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CVE-2026-40424

Out-of-bounds read for some Hyperscan before version v5.4.2.1 within Ring 3: User Applications may allow a denial of service. Unprivileged software adversary with an unauthenticated user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
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CVE-2026-0178

ARM SMMU Driver Bypass Causing Local Privilege Escalation

In multiple functions of arm-smmu-v3.c, there is a possible way to bypass direct memory access isolation via stale stream table entries due to a logic error. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
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CVE-2026-55309

In multiple functions of verifier.rs, there is a possible way to bypass secure boot signature verification via fault injection due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
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CVE-2026-55311

In N/A of gdmc/gsp/project/gdmc.mk, there is a possible Logic error due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
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CVE-2026-55319

In thread_free of thread.c, there is a possible way to corrupt kernel heap metadata on thread creation failure due to memory corruption. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
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CVE-2026-55335

In multiple locations, there is a possible use-after-free due to a logic error in the code. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
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CVE-2026-56916

In _vqueue_get_avail_buf_locked of trusty/kernel/lib/trusty/vqueue.c, there is a possible Double-read / TOCTOU due to a race condition. This could lead to local escalation of privilege with execution privileges needed. User interaction is for exploitation.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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CVE-2026-56919

Background Activity Launch Enables Local Privilege Escalation

In PackageSignatureChecker of SystemUIGoogleModule.java, there is a possible background activity launch due to a confused deputy. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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CVE-2026-59580

In trusty_context_switch of services/spd/trusty/trusty.c, there is a possible Secure world register state leak due to a logic error in the code. This could lead to local information disclosure with execution privileges needed. User interaction is for exploitation.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
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CVE-2026-59586

Improper Crypto Use Allows Key Recovery and Tag Forgery

In multiple locations, there is a possible way to recover cryptographic keys and forge authentication tags due to improperly used crypto. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 · 4.0 Medium EPSS < 1% KEV · Not listed
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CVE-2026-97040

Cgo directive injection via .syso files disguised as Go object files in cmd/go and cmd/link

Building a package containing a crafted ".syso" file could bypass cgo flag validation and inject arbitrary linker flags when linking. When loading ".syso" entries from a package archive, the linker only checked for recognized host object headers (ELF, Mach-O, PE, and XCOFF) before falling through to Go object parsing. A ".syso" file beginning with a "go object" header was parsed as a Go compiler object, allowing untrusted cgo metadata directives (such as "cgo_ldflag" or "cgo_dynamic_linker") embedded in the ".syso" file to be passed to the external linker without validation. Additionally, ".syso" filenames longer than 16 bytes lost their ".syso" extension when truncated in archive headers, and unrecognized ".syso" formats forced external linking in pure-Go builds. The linker now rejects ".syso" files that are not recognized host object formats, and "cmd/go" and "cmd/pack" preserve the ".syso" suffix when truncating long archive member names.

CVSS n/a EPSS < 1% KEV · Not listed
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CVE-2026-97035

Unexpected code execution and arbitrary file write via Clang -gen-* and GCC -gnat* flags in cgo in cmd/go

When using Clang or GCC, building a malicious package that uses cgo could cause unexpected code execution at build time or write files to arbitrary directories via "-gen-*" or "-gnat*" flags in "#cgo" directives. The "-g*" wildcard in the compiler and linker flag allowlists previously matched Clang's two-argument "-gen-cdb-fragment-path <dir>" flag and GCC's two-argument "-gnatO <file>" flag, permitting compilation database fragments and sidecar output files to be written to arbitrary directories and desynchronizing flag argument parsing between the go command and the compiler driver so that subsequent arguments could be passed as unvalidated positional inputs to the linker. "-gen-*" and "-gnat*" flags are now disallowed in "#cgo" compiler and linker flags.

CVSS n/a EPSS < 1% KEV · Not listed
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