AI is accelerating vulnerability discovery, putting pressure on systems built to enrich, prioritize, and remediate flaws at a slower pace. Action1 explains why defenders increasingly need to correlate multiple intelligence sources and turn vulnerability data into faster remediation.
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds ownCloud, Linux Kernel, and JFrog Artifactory flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: CVE-2023-49105 ownCloud Improper Authentication Vulnerability CVE-2026-53362 Linux Kernel Unspecified Vulnerability CVE-2026-66384 JFrog Artifactory Improper Limitation of a Pathname to a Restricted Directory Vulnerability CVE-2023-49105 (CVSS score of 9.8) is an improper-authentication flaw in ownCloud Server’s WebDAV functionality. An unauthenticated attacker who knows a victim’s username can read, alter, or delete that user’s files when no signing key is configured, because the application can accept pre-signed URLs without properly validating that condition. The issue affects ownCloud core versions 10.6.0 through 10.13.0, before version 10.13.1. Organisations running affected ownCloud instances should treat remediation as urgent, review exposed WebDAV services, and investigate unusual file access, deletion, modification, or downloads. CVE-2026-53362 (CVSS score of 7.8) is an out-of-bounds memory-write vulnerability in the Linux kernel’s IPv6 networking subsystem. A local attacker who can create UDP sockets could exploit an incorrect parameter-length calculation during fragmented IPv6 packet handling to overwrite kernel memory, potentially causing a system crash, corrupting data, or escalating privileges.access. Shortly after the Hugging Face incident became public, OpenAI said its models had identified and exploited a zero-day vulnerability in JFrog’s Artifactory package registry manager. The report also describes a separate incident on July 19. In that case, some AI agents exploited the Linux kernel vulnerability, CVE-2026-53362, to gain higher privileges inside an OpenAI environment. The agents detected that the Linux kernel on their machine was vulnerable, found a public exploit, modified it to work in their environment, and used it to gain root access to the underlying worker node. This allowed them to escape the Artifactory container and move laterally to other parts of the connected environment. CVE-2026-66384 (CVSS score of 5.3) is a path-traversal vulnerability in JFrog Artifactory’s Docker cache handling. Under specific remote-repository conditions, an authenticated user can manipulate a file path and write data outside the intended cache directory, potentially affecting other locations on the Artifactory host. According to Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities, FCEB agencies have to address the identified vulnerabilities by the due date to protect their networks against attacks exploiting the flaws in the catalog. Experts also recommend that private organizations review the Catalog and address the vulnerabilities in their infrastructure. CISA orders federal agencies to fix the flaw CVE-2026-66384 by September 10, while the remaining must be addressed by August, 30, 2026. Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini (SecurityAffairs – hacking, CISA)
Over 8,300 Internet-exposed Gitea instances are still unpatched against a critical security flaw exploited in ongoing remote code execution attacks, according to cybersecurity watchdog Shadowserver. The code injection vulnerability (CVE-2026-60004) targeted in these attacks was reported by Salesforce security researcher Shai Rod, and it allows authenticated attackers to execute arbitrary shell commands with the privileges of the Gitea service account by submitting malicious patches via the diffpatch API endpoint. While successful exploitation requires repository write access to repositories hosted on vulnerable servers, Gitea comes with self-registration enabled by default, allowing unauthenticated attackers to register an account, create a new repository, and trigger the vulnerability without prior credentials.
PaperCut warns that a zero-day in NG and MF is being exploited. The company already release emergency patches to address it. PaperCut Software warns that attackers are actively exploiting a zero-day in its NG and MF print management products. The flaw has no CVE yet, and the company has not released technical details. PaperCut issued emergency patches on Friday and urged customers to install them immediately. It also recommends disconnecting application servers from the internet and limiting access to trusted IP addresses. “If your PaperCut NG/MF Application Server is accessible from the public internet, immediately restrict web access to trusted IP addresses only (e.g. internal IP addresses).” states the advisory. “Use firewall rules, network access controls, or equivalent measures to ensure the PaperCut server’s web interfaces cannot be reached from untrusted internet addresses. Take this action now, even if you have not observed suspicious activity.” The company confirmed incidents affecting customers and said its investigation is still underway. “PaperCut Software security response team is investigating active exploitation of a vulnerability affecting PaperCut NG and PaperCut MF.” reads the advisory. “We are aware of confirmed customer incidents and are treating this matter with the highest priority. Our investigation is ongoing. We will update this security bulletin as verified information becomes available, including indicators of compromise and remediation guidance.” PaperCut has not yet disclosed details about the vulnerability, the attack method, or the attackers behind the campaign. So far, the company has identified several indicators of compromise: Intrusion-detection, endpoint-security, or network-monitoring tools may flag suspicious activity involving the PaperCut Application Server, especially activity linked to pc-app.exe. Attackers may delete, truncate, or alter PaperCut server.log files to hide their activity. The server.log file may contain these entries: ERROR No suitable driver found for jdbc:no:x ERROR DatabaseUtils - Database error looking up cardID: VALUES CAST Users running PaperCut should check their systems for these signs of compromise. In May 2023, Microsoft warned that Iran-linked APT groups were exploiting another flaw, tracked as CVE-2023-27350, in attacks against PaperCut MF/NG print management servers. The CVE-2023-27350 flaw is a PaperCut MF/NG Improper Access Control Vulnerability. PaperCut MF/NG contains an improper access control vulnerability within the SetupCompleted class that allows authentication bypass and code execution in the context of SYSTEM. In April 2023, Microsoft linked the attacks exploiting the CVE-2023-27350 and CVE-2023-27351 vulnerabilities in print management software PaperCut to a financially motivated threat actor tracked as Lace Tempest (formerly DEV-0950). The group is known to be an affiliate of the Clop ransomware RaaS affiliate, it has been linked to GoAnywhere attacks and Raspberry Robin infection. Since April 13, 2023, Lace Tempest added the PaperCut exploits to its arsenal. Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini (SecurityAffairs – hacking, Zero-Day)
Microsoft released the KB5120998 preview cumulative update for Windows 11 versions 25H2 and 24H2, which comes with 35 changes, including improvements to the Start menu, taskbar, and Windows search. KB5120998 is a preview update that lets IT administrators test Windows bug fixes, improvements, and new features before they roll out to all users during next month's Patch Tuesday release. However, unlike cumulative updates, monthly optional updates do not include security fixes and provide only quality improvements. After installing the August 2026 preview update, users can move the taskbar to the bottom, top, left, or right side of their screen in Settings > Personalization > Taskbar > Taskbar behaviors > Taskbar position, with most customization settings, like never combining taskbar icons, working in every position.
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Red Hat, Linux Kernel, Ajax.NET Professional, Microsoft SQL Server, and Citrix NetScaler flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: CVE-2015-3246 Red Hat Libuser Race Condition Vulnerability CVE-2015-5287 Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability CVE-2019-1068 Microsoft SQL Server Remote Code Execution Vulnerability CVE-2021-23758 Ajax.NET Professional Deserialization of Untrusted Data Vulnerability CVE-2022-0995 Linux Kernel Out-of-Bounds Write Vulnerability CVE-2026-8452 Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability CVE-2015-3246 is a race condition in Red Hat libuser that could let an authenticated local user corrupt /etc/passwd to cause denial of service or escalate privileges. CVE-2015-5287 is a privilege escalation bug in Red Hat Automatic Bug Reporting Tool that could allow local users with certain permissions to gain higher privileges via a symlink attack on a predictable file. CVE-2019-1068 is a remote code execution flaw in Microsoft SQL Server that could allow an attacker to execute code in the context of the SQL Server Database Engine service account. CVE-2021-23758 (CVSS score not specified in the KEV notice) is a deserialization of untrusted data vulnerability in Ajax.NET Professional that could allow for remote code execution via arbitrary .NET classes. CVE-2022-0995 (CVSS score not specified in the KEV notice) is an out-of-bounds memory write vulnerability in Linux Kernel that could allow a local user to gain privileged access or cause a denial of service on the system. CVE-2026-8452 (CVSS score not specified in the KEV notice) is an improper restriction of operations within the bounds of a memory buffer vulnerability in Citrix NetScaler ADC and NetScaler Gateway that could lead to denial-of-service and has been observed under active exploitation in the wild. According to Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities, FCEB agencies have to address the identified vulnerabilities by the due date to protect their networks against attacks exploiting the flaws in the catalog. Experts also recommend that private organizations review the Catalog and address the vulnerabilities in their infrastructure. CISA orders federal agencies to fix the flaws CVE-2019-1068 and CVE-2026-8452 by August 29, 2026, while the remaining must be addressed by September 9, 2026. Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini (SecurityAffairs – hacking, CISA)
cPanel has released patches for a security flaw affecting domain parking and addon domain functionality in cPanel and WebHost Manager (WHM), which could allow code execution as the root user. The vulnerability, assigned the CVE identifier CVE-2026-65643, impacts all supported versions of cPanel & WHM. cPanel described the issue as a critical security vulnerability and said that an
PaperCut has alerted customers that bad actors are actively exploiting a vulnerability impacting all versions of its PaperCut NG and PaperCut MF print management software in zero-day attacks. The company has released an emergency patch for v25 and v26 to address the issue. It said it's "aware of confirmed customer incidents and is treating this matter with the highest priority." An
Cybersecurity researchers have flagged a fresh set of campaigns targeting government and diplomatic organizations in Romania, Spain, and Türkiye between late September 2025 and early April 2026. These campaigns, per Recorded Future Insikt Group, have led to the deployment of a previously undocumented backdoor dubbed HOOKEDGE, a lightweight Windows batch script that's distributed via
New details about the July attack on Hugging Face reveal that hundreds of AI agents driven by OpenAI’s internal IM1 model coordinated the compromise through an unauthorized message board. Last month, Hugging Face disclosed that autonomous AI agents exploited two vulnerabilities in its dataset-processing pipeline to execute code, steal cloud and cluster credentials, and move laterally across its production infrastructure. OpenAI later confirmed that its models escaped an ExploitGym evaluation environment through a zero-day vulnerability in a locally hosted instance of JFrog's Artifactory package manager that was connected to the internet. The agents searched online for benchmark solutions and breached the Hugging Face platform using exposed credentials and additional vulnerabilities. OpenAI's investigation, validated by CrowdStrike and an independent assessment by METR and Redwood Research, found that rogue activity started in May.
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