Week in review: Cisco ASA zero-day vulnerabilities exploited, Fortra GoAnywhere instances at risk
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2025-10035 | Deserialization Flaw in Fortra GoAnywhere MFT License Servlet Enables RCE CVE-2025-10035 is a critical (CVSS 9.8) deserialization-of-untrusted-data flaw (CWE-502) in the License Servlet of Fortra GoAnywhere Managed File Transfer (MFT). It is triggered when the servlet processes a license response carrying a validly forged signature, causing it to deserialize an arbitrary attacker-controlled object; the CVSS vector indicates the attack is network-based and requires no privileges or user interaction. Successful exploitation can lead to command injection (CWE-77), effectively giving an attacker command execution on the MFT server and access to the files and credentials that flow through it. Any organization running GoAnywhere MFT, which is commonly deployed as a central file-transfer hub, is affected, although specific affected/fixed version ranges are not provided in the available data. Exploitation is confirmed in the wild: the flaw was added to CISA's KEV catalog on 2025-09-29 with known ransomware use, Microsoft attributes attacks to the Storm-1175 ransomware affiliate (Medusa, now reportedly replaced by StormEncryptor), and EPSS assigns a 99.8% probability of exploitation within 30 days. Do: Apply mitigations or patches per Fortra's vendor instructions immediately, as this is a KEV entry carrying BOD 22-01 requirements for federal agencies (patch or discontinue use if mitigations are unavailable). Because a ransomware affiliate (Storm-1175, using Medusa/StormEncryptor) is actively exploiting it, hunt for compromise: review License Servlet traffic and logs for forged license responses, check for unexpected processes or new accounts, and look for signs of lateral movement. Until patched, restrict or remove internet exposure of GoAnywhere MFT admin and license interfaces. | 9.8 | 100% | KEV ransomware |
| moderatelow thousands of internet-exposed GoAnywhere MFT instances (estimate) | |
| CVE-2025-20352 | SNMP Stack Buffer Overflow in Cisco IOS and IOS XE Enables DoS and Root RCE Cisco IOS and IOS XE contain a stack-based buffer overflow (CWE-121) in the Simple Network Management Protocol (SNMP) subsystem. An attacker who can reach the device's SNMP service can send crafted SNMP requests: with a low-privileged SNMP account the attacker can crash the device and force a reload (denial of service), while with a high-privileged SNMP account the attacker can execute arbitrary code as root and take full control of the device. Any organization running Cisco IOS or IOS XE on routers, switches, or controllers is potentially affected, especially where SNMP is enabled or reachable from untrusted networks. The vulnerability was added to CISA's Known Exploited Vulnerabilities catalog on 2025-09-29, confirming exploitation in the wild, and EPSS assigns it a 39.4% probability of exploitation within 30 days (99th percentile). CVSS scoring is not yet available and no public proof-of-concept is known, but defenders should treat the flaw as actively exploited. Do: Upgrade IOS and IOS XE devices to fixed software releases as specified in Cisco's security advisory; given the KEV listing, federal agencies should follow BOD 22-01 timelines or apply vendor-directed mitigations. As interim mitigation, restrict SNMP access to trusted management hosts using ACLs (and management VRFs where supported), disable SNMP on devices that do not need it, and audit existing SNMP community strings and SNMPv3 users to identify accounts with high privilege levels, which expose the root code-execution path. | 7.7 | 39% | KEV |
| massmillions of installed IOS/IOS XE devices worldwide, with likely hundreds of thousands internet-exposed where SNMP is reachable | |
| CVE-2025-26399 | Unauthenticated Deserialization RCE in SolarWinds Web Help Desk SolarWinds Web Help Desk contains an unauthenticated deserialization of untrusted data vulnerability (CWE-502) in its AjaxProxy component that allows remote attackers to run arbitrary commands on the host machine without any credentials or user interaction. It is triggered by sending a crafted request to the AjaxProxy endpoint of an affected Web Help Desk installation. Successful exploitation yields full code execution on the server, and the flaw is known to be used in ransomware campaigns. Any organization running SolarWinds Web Help Desk is affected, including installations already patched for the earlier CVE-2024-28988 and CVE-2024-28986, since this flaw is a patch bypass of both. The flaw carries a very high exploitation probability (EPSS ~89.5%) and was added to CISA's Known Exploited Vulnerabilities catalog on 2026-03-09 with known ransomware use. Do: Immediately apply SolarWinds' hotfix for CVE-2025-26399 per the vendor's instructions — organizations that previously patched CVE-2024-28988 or CVE-2024-28986 must apply the new hotfix because those patches do not close this flaw. If the hotfix cannot be applied right away, restrict network access to Web Help Desk (firewall/VPN, limit exposure of the service to the internet) and discontinue use if mitigations are unavailable, per CISA KEV/BOD 22-01 guidance. Given known ransomware use, review Web Help Desk hosts for signs of compromise, including unexpected process execution and accounts or data accessed via the server. | 9.8 | 90% | KEV ransomware |
| moderatelow thousands of internet-exposed Web Help Desk instances, with a total on-prem install base plausibly in the tens of thousands | |
| CVE-2025-59689 | Command Injection in Libraesva Email Security Gateway Exploited in the Wild CVE-2025-59689 is a command injection flaw (CWE-77) in Libraesva Email Security Gateway versions 4.5 through 5.5.x before 5.5.7. It is triggered when the gateway processes a crafted compressed email attachment; per the CVSS vector, no privileges are required but user interaction is involved, and the injection lets an attacker run arbitrary commands with impact that extends beyond the affected component (scope change). Any organization running an affected Libraesva ESG release is in scope, with email security gateways typically sitting in the mail flow and handling untrusted inbound attachments. The flaw is being actively exploited, with public reports attributing exploitation to state-sponsored actors, and CISA added it to the Known Exploited Vulnerabilities catalog on 2025-09-29. Do: Upgrade to the fixed release for your deployed line: 5.5.7, 5.4.8, 5.2.31, 5.1.20, or 5.0.31. Because the flaw is actively exploited, including by nation-state actors, review gateway logs and compressed-attachment handling for signs of compromise after patching; organizations subject to BOD 22-01 must apply vendor mitigations or discontinue use of the product. | 6.1 | 2% | KEV |
| nichelikely on the order of thousands of appliance deployments worldwide (exact count unknown) |
Full article1,243 words · extracted from helpnetsecurity.com · click to collapse
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos:
How Juventus protects fans, revenue, and reputation during matchdays
In this Help Net Security interview, Mirko Rinaldini, Head of ICT at Juventus Football Club, discusses the club’s approach to cyber risk strategy. Juventus has developed a threat-led, outcomes-driven program that balances innovation with protections across matchdays, e-commerce, and digital platforms.
Review: Practical Purple Teaming
Practical Purple Teaming is a guide to building stronger collaboration between offensive and defensive security teams. The book focuses on how to design and run effective purple team exercises that improve detection and response and strengthen trust between teams.
Building a stronger SOC through AI augmentation
In this Help Net Security interview, Tim Bramble, Director of Threat Detection and Response at OpenText, discusses how SOC teams are gaining value from AI in detecting and prioritizing threats. By learning what “normal” looks like across users and systems, AI helps surface anomalies that rules-based methods often miss.
Attackers exploited critical Fortra GoAnywhere flaw in zero-day attacks (CVE-2025-10035)
CVE-2025-10035, a perfect CVSS 10.0 vulnerability in the Fortra GoAnywhere managed file transfer solution, has apparently been exploited in zero-day attacks before the patch was released on September 15, 2025.
Malicious GitHub pages lure MacOS users into installing Atomic infostealer
MacOS users looking to download popular software such as LastPass, 1Password, After Effects, Gemini, and many others are in danger of getting saddled with the Atomic infostealer instead, LastPass has warned.
SonicWall adds rootkit removal capabilities to the SMA 100 series
SonicWall has released new firmware for its Secure Mobile Access (SMA) 100 series appliances, adding file-checking capabilities that help users remove known rootkit malware.
After Shai-Hulud, GitHub tightens npm publishing security
Attackers are constantly finding ways to take over accounts and push malicious packages to the npm registry, the (GitHub-operated) online repository for JavaScript and Node.js packages.
Kali Linux 2025.3 brings improved virtual machine tooling, 10 new tools
OffSec has released Kali Linux 2025.3, the most up-to-date version of its popular penetration testing and digital forensics platform.
Libraesva ESG zero-day vulnerability exploited by attackers (CVE-2025-59689)
Suspected state-sponsored attackers have exploited a zero-day vulnerability (CVE-2025-59689) in the Libraesva Email Security Gateway (ESG), the Italian email security company has confirmed.
SolarWinds fixes critical Web Help Desk RCE vulnerability (CVE-2025-26399)
SolarWinds has fixed yet another unauthenticated remote code execution vulnerability (CVE-2025-26399) in Web Help Desk (WHD), its popular web-based IT ticketing and asset management solution.
Cisco ASA zero-day vulnerabilities exploited in sophisticated attacks
A widespread campaign aimed at breaching organizations via zero-day vulnerabilities in Cisco Adaptive Security Appliances (ASA) has been revealed by the US, UK, Canadian and Australian cybersecurity agencies.
Cybercriminals are going after law firms’ sensitive client data
Regardless of their size, all law firms hold valuable data, including client communications, financial records, and confidential legal strategies. That data has never been more at risk. Cybercriminals are targeting law firms by exploiting vulnerabilities, weak passwords, outdated systems, and untrained staff.
U.S. Secret Service takes down network of devices threatening government officials
The U.S. Secret Service has broken up a network of electronic devices spread across the New York tristate area that officials say posed an imminent threat to national security. The devices were being used to launch telecommunications attacks and to send threats targeting senior government officials.
The fight to lock down drones and their supply chains
Drones have already shown their impact in military operations, and their influence is spreading across the agricultural and industrial sectors. Given their technological capabilities, we need to be aware of the risks they bring.
Cybersecurity AI (CAI): Open-source framework for AI security
Cybersecurity AI (CAI) is an open-source framework that helps security teams build and run AI-driven tools for offensive and defensive tasks. It’s designed for anyone working in security, including researchers, ethical hackers, IT staff, and organizations that want to use AI to find vulnerabilities, test defenses, and improve their security.
New framework sets baseline for SaaS security controls
Managing security across dozens or even hundreds of SaaS apps has become a major headache. Each tool has its own settings, permissions, and logs, and most third-party risk processes only look at the vendor’s overall security, not the app itself. That leaves gaps you have to close on your own, often with limited visibility and extra work for both your team and procurement.
Cisco fixes IOS/IOS XE zero-day exploited by attackers (CVE-2025-20352)
Cisco has fixed 14 vulnerabilities in IOS and IOS XE software, among them CVE-2025-20352, a high-severity vulnerability that has been exploited in zero-day attacks.
Microsoft spots LLM-obfuscated phishing attack
Cybercriminals are increasingly using AI-powered tools and (malicious) large language models to create convincing, error-free emails, deepfakes, online personas, lookalike/fake websites, and malware. More recently, Microsoft Threat Intelligence spotted and blocked an attack campaign delivering an LLM-obfuscated malicious attachment.
European Windows 10 users get an additional year of free security updates
Windows 10 users in the European Economic Area (EEA) will be able to receive extended security updates until October 14, 2026, without having to pay for them or to back up their settings, apps, or credentials to the Microsoft cloud.
AI needs ethics to avoid real-world harm
In this Help Net Security video, Brittany Allen, Senior Trust and Safety Architect at Sift, explores how the rise of AI agents is creating new fraud risks. She explains how these agents, while designed to assist users, can unintentionally help fraudsters by carrying out tasks without recognizing malicious intent.
Building AI responsibly from day one
In this Help Net Security video, David Hardoon, Global Head of AI Enablement at Standard Chartered, discusses the role of ethics and safety in AI development.
How agentic AI is changing the SOC
In this Help Net Security video, David Norlin, CTO of Lumifi, explores the role of agentic AI in the security operations center (SOC). He explains what agentic AI is, how it can enhance cybersecurity workflows by automating repetitive tasks, and why accountability and careful implementation are critical.
Gartner: Preemptive cybersecurity to dominate 50% of security spend by 2030
By 2030, preemptive cybersecurity solutions will account for 50% of IT security spending, up from less than 5% in 2024, replacing standalone detection and response (DR) solutions as the preferred approach to defend against cyberthreats, according to Gartner.
Nosey Parker: Open-source tool finds sensitive information in textual data and Git history
Nosey Parker is an open-source command-line tool that helps find secrets and sensitive information hidden in text files. It works like a specialized version of grep, focused on spotting things like passwords, API keys, and other confidential data.
APIs and hardware are under attack, and the numbers don’t look good
Attackers have a new favorite playground, and it’s not where many security teams are looking. According to fresh data from Bugcrowd, vulnerabilities in hardware and APIs are climbing fast, even as website flaws hold steady. The shift shows how attackers are adapting to infrastructure, going after the hidden systems that keep businesses running.
Cybersecurity jobs available right now: September 23, 2025
We’ve scoured the market to bring you a selection of roles that span various skill levels within the cybersecurity field. Check out this weekly selection of cybersecurity jobs available right now.
Infosec products of the month: September 2025
Here’s a look at the most interesting products from the past month, featuring releases from: Absolute Security, Blackdot Solutions, Catchpoint, Cynomi, DataLocker, Gigamon, Lookout, Nagomi Security, Neon Cyber, QuSecure, Relyance AI, Secure Code Warrior, and Teleport.
Text extracted automatically; images, tables and formatting may be missing. Original: https://www.helpnetsecurity.com/2025/09/28/week-in-review-cisco-asa-zero-day-vulnerabilities-exploited-fortra-goanywhere-instances-at-risk/