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The Ceph project released Ceph 20.2.4 and Ceph 19.2.6 to fix four security vulnerabilities affecting CephX, the Ceph Monitor config-key store, and RADOS Gateway (RGW) handling of SigV4 requests and STS session tokens. The most serious issue, CVE-2025-30156, is an authentication bypass in CephX caused by unauthenticated AES-128-CBC encryption with a hard-coded initialization vector and no HMAC, allowing ticket tampering and credential forgery under certain conditions. Other fixes address unauthorized disclosure of sensitive secrets, including OSD LUKS passphrases and cephadm SSH private keys, as well as privilege escalation that can reach full RGW administrator access.
The flaws also affect OpenStack deployments that rely on Ceph keyrings, including Nova, Cinder, Glance, and Manila, and can expose tenants using native CephFS through Manila. OpenStack and Ceph advisories say versions prior to 20.2.4 and 19.2.6 are vulnerable and urge operators to upgrade Ceph servers and clients, rotate all CephX credentials to the new aes256k key type, and restart or live migrate Nova guests so they load updated keys. Ceph said it replaced the insecure CephX cryptography with AES-256-CTS-HMAC-SHA384-192 and recommends enforcing the new cipher once key rotation is complete.
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On August 19, 2026, the Ceph project released Ceph Tentacle 20.2.4 and Ceph Squid 19.2.6 to fix four vulnerabilities affecting CephX, the Monitor config-key store, and RGW components. The release addressed CVE-2025-30156, CVE-2026-39944, CVE-2026-50152, and CVE-2026-54330, including replacing insecure CephX AES-CBC usage with AES-256-CTS-HMAC-SHA384-192.
An OpenStack security notice warned that multiple Ceph authentication vulnerabilities affect OpenStack deployments using CephX keyrings, including Nova, Cinder, Glance, and Manila. The notice advised upgrading to patched Ceph releases, rotating CephX credentials to the new aes256k key type, and restarting or live migrating Nova guests so they load new keys.
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Multiple vendors issued fixes for **high-impact vulnerabilities** that could enable privilege escalation, tenant-wide compromise, security feature bypass, or remote code execution. OpenStack patched **CVE-2026-22797** in *keystonemiddleware* affecting deployments using `external_oauth2_token`, where failure to sanitize incoming identity headers allows authenticated users to forge headers (e.g., `X-Is-Admin-Project`, `X-Roles`, `X-User-Id`) to **escalate privileges or impersonate other users**; fixes were released across supported branches and the issue was reported by a Red Hat researcher. Microsoft patched **CVE-2026-20965** in *Windows Admin Center*’s Azure SSO (fixed in Azure Extension **v0.70.00**), where improper token validation could let an attacker with local admin on a WAC-enabled Azure VM/Arc machine combine a stolen `WAC.CheckAccess` token with a forged PoP token to enable **lateral movement and tenant-wide access** under certain conditions. Separately, Microsoft addressed **CVE-2026-20824** in *Windows Remote Assistance*, an **Important** security feature bypass that can allow attackers to evade **Mark of the Web (MOTW)** protections via social engineering. Progress Software also released patches for **CVE-2025-13444** and **CVE-2025-13447** (CVSS 8.4) affecting *LoadMaster* and *MOVEit WAF*, where crafted UI/API requests can trigger **command injection leading to remote code execution**; the vendor stated it had no evidence of in-the-wild exploitation at the time of release.
Jun 29, 2026
Citrix released security updates for **NetScaler ADC** and **NetScaler Gateway** to fix two critical vulnerabilities, **`CVE-2026-19490`** and **`CVE-2026-19489`**, affecting internet-facing application delivery and remote access infrastructure. `CVE-2026-19490` is an authentication bypass flaw with a **CVSS v4.0 score of 9.3** that can be exploited remotely by an unauthenticated attacker with low complexity and no user interaction, while `CVE-2026-19489` is a memory overflow issue that can lead to service disruption and other unpredictable behavior. Vendor guidance ties both issues to Citrix bulletin **`CTX696939`**. Affected versions include NetScaler ADC and Gateway **14.1 before 14.1-73.32** and **13.1 before 13.1-63.21**, with additional impact noted for **NetScaler ADC FIPS before 14.1-73.32 FIPS** and **13.1-37.277 FIPS/NDcPP**. Finnish authorities and Rapid7 said they were not aware of active exploitation at publication time, but both urged organizations to patch immediately because exposed Citrix edge devices are frequent high-value targets. Citrix also published version-specific remediation guidance and configuration checks to help customers determine whether their deployments meet the prerequisites for exploitation.
Aug 22, 2026
Red Hat released a series of **kernel** and **kernel-rt** security advisories affecting **RHEL 7 ELS, RHEL 8, RHEL 9, and RHEL 10** product streams, including AUS, EUS, SAP Solutions, Telecommunications, Extended Life Cycle, and Extended Update Support channels. The updates fix clusters of vulnerabilities across networking, storage, memory management, and filesystem components, with repeated remediation for flaws such as `CVE-2026-23270` in traffic control `act_ct`, `CVE-2026-31419` in the bonding driver, `CVE-2026-43163` in `md/bitmap`, and multiple libceph, netfilter, RDMA, SMB, IPv6, SCTP, ALSA, and BPF issues. Red Hat rated several advisories **Important** and some **Critical**, citing impacts that include denial of service, memory corruption, out-of-bounds reads, use-after-free conditions, and possible local privilege escalation. The advisories span updated kernel builds including `3.10.0-1160.151.1.el7`, `4.18.0-305.197.1.el8_4`, `4.18.0-477.150.1.el8_8`, `4.18.0-553.132.1.el8_10`, `5.14.0-284.176.1.el9_2`, `5.14.0-427.127.1.el9_4`, `5.14.0-570.119.1.el9_6`, and `6.12.0-55.82.1.el10_0`, and Red Hat said affected systems must be **rebooted** after patching. One separately documented flaw, `CVE-2025-71116`, was traced to libceph `decode_pool()` parsing of malformed `osdmap` data, allowing an authenticated remote Ceph OSD or monitor to crash a client kernel; Red Hat said the issue was fixed with explicit bounds checks and advised preventing the `libceph` module from loading where Ceph is not used.
Aug 25, 2026