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Search: “certificate validation”

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AWS Certificate Manager sets 2027 end date for email-validated certificate renewals

AWS Certificate Manager will phase out email validation for public certificates during 2027, requiring migration to DNS validation before September 30, 2027.

AWS Certificate Manager will stop offering email validation in new Regions on January 1, 2027, discontinue it for new certificate requests on March 31, 2027, and stop renewing email-validated certificates on September 30, 2027. This precedes the CA/Browser Forum's March 15, 2028 deadline ending email-based domain validation for publicly trusted certificates. AWS is updating the UpdateCertificateOptions API so customers can switch to DNS validation in place while retaining the certificate ARN, with Route 53 support for creating required CNAME records.

Help Net Security · Aug 14, 2026Advisory

ZTNA Portal Improper Certificate Validation

Fortinet fixed an improper certificate validation flaw (CVSS 7.3) in FortiOS and FortiProxy Agentless ZTNA portal enabling unauthenticated man-in-the-middle attacks on backend traffic.

Fortinet advisory FG-IR-26-174 discloses an improper certificate validation vulnerability (CWE-295) in the FortiOS and FortiProxy Agentless ZTNA portal, rated CVSSv3 7.3. A remote and unauthenticated attacker can perform a man-in-the-middle attack on the communication channel between the ZTNA portal and the backend destination website. The advisory was revised on 2026-09-08.

Fortinet PSIRT · 9d agoAdvisory

ZDI-26-558: (Pwn2Own) Amazon Smart Plug OTA Update Process Improper Certificate Validation Vulnerability

ZDI disclosed a Pwn2Own certificate validation flaw (CVSS 6.8) in Amazon Smart Plug's OTA process, allowing network-adjacent attackers to bypass update verification.

The Zero Day Initiative published ZDI-26-558 for an improper certificate validation flaw in the Amazon Smart Plug OTA update process, demonstrated at Pwn2Own. Network-adjacent attackers need no authentication to bypass certificate validation for over-the-air updates. ZDI rated the issue CVSS 6.8.

ZDI Published Advisories · Aug 12, 2026Advisory

FGFM Authentication Weakening via CLI Configuration

FortiManager FGFM flaw (CVSS 7.3) lets an attacker with a valid certificate impersonate any managed FortiGate under a specific CLI option.

Fortinet advisory FG-IR-26-160 describes an authentication bypass via alternate path (CWE-288) in FortiManager and FortiManager Cloud, scored CVSSv3 7.3. A remote unauthenticated attacker holding a valid certificate can impersonate any FortiGate managed by the affected FortiManager when a specific CLI option is set. The impersonation is performed with crafted FGFM protocol requests. The advisory was revised on 2026-08-12 and does not report active exploitation.

Fortinet PSIRT · Aug 12, 2026Advisory

Cisco Secure Firewall Threat Defense Software Snort 2 SSL/TLS Denial of Service Vulnerability

Cisco fixed an SSL certificate parsing flaw in FTD's Snort 2 engine letting unauthenticated remote attackers force detection engine restarts.

Incomplete validation of SSL certificates in the Snort 2 Detection Engine of Cisco Secure Firewall Threat Defense software allows an unauthenticated, remote attacker to send a crafted SSL connection setup request for parsing. A successful exploit restarts the Snort 2 Detection Engine unexpectedly, causing a denial of service. Cisco has released software updates, and no workarounds address the vulnerability.

Cisco Security Advisories · 19h agoAdvisory 9 sources

Debian 13.7 ships the fixes behind 92 security advisories, updates 106 packages

Debian 13.7 'trixie' point release bundles 92 security advisories and 106 package updates, including kernel, glibc, u-boot and qemu fixes.

Debian shipped version 13.7 of 'trixie', folding in 92 previously published security advisories and corrections to 106 source packages, including six Linux kernel advisories (DSA-6381, DSA-6393, DSA-6405, DSA-6415, DSA-6466, DSA-6477). glibc fixes a buffer overflow (CVE-2026-5928) and buffer underflow (CVE-2026-5450), with 17 packages rebuilt against the updated library; qemu carries 25 CVEs including a secure boot bypass (CVE-2026-16288), imagemagick 24, wolfssl 15 and perl 13. Boot-chain fixes include a u-boot FIT image verification bypass (CVE-2026-46728), a BOOTP/DHCP buffer overread (CVE-2024-42040), and corrected intermediate certificate verification in sbsigntool. The installer was rebuilt with kernel ABI 6.12.107+deb13, and existing systems receive the fixes through normal package mirror updates.

Help Net Security · 3d agoAdvisoryCVE-2026-5928CVE-2026-5450CVE-2026-34873+17 CVEs

Microsoft releases Windows 10 KB5122878 extended security update

Microsoft shipped Windows 10 ESU update KB5122878, delivering the record September 2026 Patch Tuesday fixes, including patches for two actively exploited zero-days.

Microsoft released KB5122878 for Windows 10 Enterprise LTSC and ESU customers, moving builds 19045/19044 to .7725 with security and bug fixes. The update carries this month's record September 2026 Patch Tuesday set, which fixed 966 Microsoft vulnerabilities including two actively exploited zero-day flaws. It also fixes BitLocker recovery-key prompts and Remote Desktop audio redirection, and updates Secure Boot certificate rollout and Morocco time zone data. Microsoft reports no known issues with the update.

BleepingComputer · 8d agoAdvisory in the wild1

Siemens Reyrolle 7SR5

CISA advisory covers 14 vulnerabilities, CVSS 9.8, in Siemens Reyrolle 7SR5 energy-sector protection relays before V2.70.

CISA advisory ICSA-26-258-05 covers 14 vulnerabilities in Siemens Reyrolle 7SR5 protection relays before V2.70, used in the energy sector worldwide, with aggregate CVSS v3 of 9.8. Flaws include Cesanta Mongoose web server issues (CVE-2024-42384 through CVE-2024-42392) and new bugs such as web-interface session-ID exposure enabling authentication bypass (CVE-2026-62645, CVSS 9.8), predictable session tokens (CVE-2026-62646, CVE-2026-62647), and pre-auth out-of-bounds writes (CVE-2026-62648). Siemens has released V2.70 and recommends updating to the latest version.

CISA Advisories · 1d agoAdvisoryCVE-2024-42384CVE-2024-42385CVE-2024-42386+11 CVEs

CISA Red Team Fully Compromised Two Critical Infrastructure Orgs

CISA red teams achieved full domain and cloud compromise at two critical infrastructure orgs; one SOC never detected the intrusion.

CISA advisory AA26-237A documents two simultaneous red team assessments. Organization A (Government Services sector) missed the intrusion entirely, as default credentials on a web app, ADCS ESC1 abuse, and thousands of false-positive alerts let the red team reach sensitive business systems and read SOC email. Organization B (Water/Wastewater sector) detected, isolated, and reimaged hosts quickly, but both orgs lacked Conditional Access for workload identities, and B still exposed DCSync, Golden Ticket, and OT network attack paths.

Security Affairs · 21d agoAdvisory1

Microsoft September 2026 Patch Tuesday fixes 966 flaws, 2 zero-days

Microsoft's September 2026 Patch Tuesday fixes a record 966 flaws, including two Windows zero-days actively exploited to gain SYSTEM privileges.

Microsoft's September 2026 Patch Tuesday addresses a record 966 vulnerabilities, including 105 rated Critical, 81 of them remote code execution bugs. Two zero-days were actively exploited: a Windows Update Stack link-following flaw and a Windows ALPC heap-based buffer overflow, both allowing local elevation to SYSTEM privileges. The ALPC flaw was reported by Volexity and Proofpoint researchers, while the Update Stack flaw was credited to Romain Deperne and the Microsoft Threat Intelligence Centre. Microsoft shared no details on how the flaws were exploited in attacks.

BleepingComputer · 8d agoAdvisory in the wildCVE-2026-69805CVE-2026-58649CVE-2026-69806+27 CVEs1