Broadcom VMSA-2026-0006 (29 July 2026; updated 19 August) covers CVE-2026-59310, a Critical directory-traversal flaw in the VMware vCenter Syslog server. A malicious actor with network access to vCenter can execute arbitrary code; Broadcom rates maximum CVSSv3 9.8; NVD CVSS 3.1 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). No workarounds — apply fixed builds per the VMSA response matrix / FAQ (brcm.tech/vmsa-2026-0006). CISA added the CVE to KEV on 18 August 2026 (FCEB due 21 August) after QUIRSO reported 361+ compromised IPs across 47 countries with reverse-SSH persistence. Updated 15 Sep 2026: according to BleepingComputer and the CISA KEV catalog (knownRansomwareCampaignUse=Known), CISA now flags the flaw as used in ransomware campaigns; Shadowserver still tracks 450+ internet-exposed vCenter instances. Treat unpatched vCenter as emergency. (sources: Broadcom VMSA-2026-0006; CISA KEV; BleepingComputer)
Weak authentication in on-premises Microsoft SharePoint (CVE-2026-55040) lets an unauthorised attacker bypass a security feature over the network. CISA added it to KEV on 18 August 2026 after evidence of active exploitation. NVD scores it 9.1 (CVSS 3.1). It is the auth-bypass half of an unauthenticated RCE chain with August's CVE-2026-63520 (Business Connectivity Services RCE). Apply the July/August SharePoint security updates for Subscription Edition, 2019 and 2016, and keep farms off the public internet unless required.
CISA added CVE-2026-33824 to the Known Exploited Vulnerabilities catalog on 18 August 2026: a double-free in Microsoft Internet Key Exchange (IKE) Service Extensions. Treat internet-reachable IKE as known-exploited and apply Microsoft's update.
Zabbix's 18 August 2026 advisory (ZBX-28071) says that in Zabbix 7.4 the cryptographic key used for signing frontend sessions was erroneously written to the database seed. The only known exploitation scenario is deployments that use both SAML authentication and guest users: the key can be used to forge valid session cookies and gain unauthorised frontend access. Other deployments have no known impact. Affected: 7.4.0 through 7.4.10. Fixed: 7.4.11. Vendor CVSS 4.0 is 7.7 (High). Workaround: clear settings.session_key in the Zabbix database so the frontend generates a new random key. Zabbix credited Daniel Shemesh and Or Ida via HackerOne. Not in CISA KEV at last check.
Red Hat's 17 August 2026 CVE record (threat severity Critical, CVSS 3.1 9.1) describes a reset-credentials flaw in keycloak-services for Red Hat Build of Keycloak. An unauthenticated remote attacker can force password reset for any user without the email verification step and set new credentials, taking over the account. Temporary mitigation if you cannot patch yet: turn Forgot password off for every realm (Realm settings → Login). Fixed packages include Keycloak 26.4 builds at or after rhbk/keycloak-operator-bundle 26.4.15-1 / keycloak-rhel9 26.4-23 (RHSA-2026:56519 / 56520) and 26.6 builds at or after 26.6.6-1 / 26.6-12 (RHSA-2026:56523 / 56524). Red Hat marks Red Hat Single Sign-On 7 and JBoss EAP Expansion Pack as not affected. No in-the-wild exploitation stated on the Red Hat CVE page at last check.
Ray is an AI compute engine. CISA added CVE-2025-62593 to KEV on 17 August 2026. The Ray GitHub advisory describes a code-injection issue in versions before 2.52.0. Patch to 2.52.0. Do not expose developer Ray services to untrusted networks. The Ray advisory rates it 9.4 Critical under CVSS 4.0 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H). Correction (27 Oct 2026): the CVSS fields now show the advisory's CVSS 4.0 score and vector; an earlier version paired the 9.4 score with a CVSS 3.1 vector. (source: Ray advisory)
Apple released iOS 26.6.1 and iPadOS 26.6.1 and macOS Tahoe 26.6.2 on 17 August 2026 (security-content pages published 20 August). The iOS advisory includes ImageIO integer overflow CVE-2026-65346, where processing an image may lead to arbitrary code execution; Telephony CVE-2026-65329, where an attacker in a privileged network position may be able to bypass IPSec authentication and intercept network traffic (iPhone 11 and later); Kernel use-after-free CVE-2026-65343 (remote unexpected system termination); and multiple WebKit memory-safety issues. Apple does not publish CVSS scores on that page. Safari 26.6.1 followed on 18 August for macOS Sonoma and Sequoia. This is separate from CVE-2026-65400 (macOS Screen Sharing), which CISA added to KEV on 18 August.
Apple: iOS 26.6.1 and iPadOS 26.6.1 security content
Linux kernel CVE-2026-72018 (published 15 August 2026; XBOW research write-up 28 September 2026) is an out-of-bounds write in dibs_loopback move_data(): the software SMC-D loopback path memcpy'd into a registered DMB without checking offset+size against DMB length. A local user with CAP_NET_ADMIN can stage a malicious SMC-D peer over loopback, drive a constrained zero-write past the buffer, and escalate to root (XBOW demonstrated reliable LPE). CNA CVSS 3.1 7.8 HIGH (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Affected from the 6.10-era DIBS loopback introduction; fixed in stable trains including 6.12.97, 6.18.40, 7.1.5 and 7.2 (per CVE.report / Linux CNA). (sources: CVE.report; kernel stable commits; XBOW)
Microsoft Security Update Guide CVE-2026-69414 is an elevation of privilege in the Microsoft Malware Protection Engine (ShieldBreak): CVSS 3.1 base 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), Important. August reporting described a public local PoC to SYSTEM when Defender is enabled, including as a bypass of RoguePlanet (CVE-2026-50656). BleepingComputer (9 September 2026) says Microsoft shipped a ShieldBreak fix in the September 2026 Patch Tuesday set, and that researcher Nightmare Eclipse then released a "ShieldCrash" proof-of-concept claiming the patch is incomplete under specific conditions — arbitrary file read as SYSTEM on fully patched Windows 10/11/Server, without write access in the published skeleton PoC. Treat ShieldCrash as secondary researcher claim until MSRC documents a new CVE or revises 69414. Watch MSRC for engine build requirements; do not equate a public PoC with confirmed in-the-wild exploitation.
PostgreSQL's own security page for CVE-2026-6471 (fix published 13 August 2026) describes missing authorisation in logical decoding: a non-superuser with REPLICATION privilege can cause the server to dlopen any file visible to the OS account running PostgreSQL by choosing the logical decoding plugin path, which runs arbitrary code as that account. Affected before 18.6, 17.11, 16.15, 15.19, and 14.24; fixed in those builds. Vendor CVSS 3.0 is 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H). Cyera Research, which named the flaw PostGREShell in a 1 September 2026 write-up, says the plugin name in a CREATE_REPLICATION_SLOT command reaches the library loader without the path check, letting an account with the REPLICATION attribute (held by backup tools, standby servers, CDC pipelines and monitoring systems) run code, escalate to superuser and install persistent backdoors. (source: Cyera Research) Inventory roles with REPLICATION, patch to the fixed minor releases, and do not treat REPLICATION as a low-privilege convenience grant. Correction (03 Nov 2026): removed SecurityWeek as a source. (source: Cyera Research)
WordPress 7.0.4 (12 August 2026) is a security release. An Author or anyone with upload_files can upload a malicious PostScript file and reach remote code execution, but only where Imagick and Ghostscript are both in use. WordPress credits pwn.ai. GitHub advisory GHSA-8vr3-7mxf-gx8w scores it 8.8 (CVSS 3.0). Fixed in 7.0.4, with backports through the 4.7 branch (6.9.7, 6.8.8, and the matching older branch builds). No exploitation claim on the WordPress or GitHub notices.
Palo Alto Networks 12 August 2026 advisory: local privilege-escalation bugs in the GlobalProtect app let a local user reach NT AUTHORITY\SYSTEM on Windows and root on macOS and Linux, then run commands with administrative privileges. iOS, Android and Chrome OS are not affected. Vendor CVSS-BT is 5.9 (CVSS 4.0); the same advisory lists CVSS-B 8.5 without the exploit-maturity modifier. Palo Alto Networks says it is not aware of malicious exploitation. Same-day GlobalProtect app advisories cover CVE-2026-0295 (macOS race-condition LPE, CVSS-BT 4.1), CVE-2026-0296 (certificate-validation bypass of app traffic, not the VPN tunnel, CVSS-BT 4.5), CVE-2026-0297 (UDP tunnel handshake buffer overflow, CVSS-BT 5.2) and CVE-2026-0298 (Windows PLAP MitM code execution, CVSS-BT 5.2 / CVSS-B 7.7). Those sibling advisories show Updated 2026-09-12 on the PSIRT hub; Palo Alto Networks still says it is not aware of malicious exploitation. PAN-OS URL Filtering information disclosure CVE-2026-0301 (CVSS 1.7) was also published 12 August. Prisma Access Agent LPE CVE-2026-0294 (CVSS-BT 6.0; patch 26.3+) remains a related same-day PSIRT item.
