Is CVE-2020-3259 known to be exploited?

It is not marked known-exploited in this record.

CVE-2020-3259

Organizations should regularly patch and update systems, especially firewalls and edge devices, addressing the CVEs listed in the advisory (CVE-2020-3259, CVE-2023-20269, CVE-2023-27532, CVE-2024-40711, CVE-2024-40766). Implementing Zero Trust Architecture, restricting administrative tools and privileges to necessary users only, and strengthening account security through ICAM policies and multifactor authentication (MFA) are critical defensive measures. Network defenders should review provided IOCs and MITRE ATT&CK mappings for detection and hunting.

Quick answers

What is CVE-2020-3259?: Organizations should regularly patch and update systems, especially firewalls and edge devices, addressing the CVEs listed in the advisory (CVE-2020-3259, CVE-2023-20269, CVE-2023-27532, CVE-2024-40711, CVE-2024-40766). Implementing Zero Trust Architecture, restricting administrative tools and privileges to necessary users only, and strengthening account security through ICAM policies and multifactor authentication (MFA) are critical defensive measures. Network defenders should review provided IOCs and MITRE ATT&CK mappings for detection and hunting.
How severe is CVE-2020-3259?: high
Is CVE-2020-3259 known to be exploited?: It is not marked known-exploited in this record.
How should CVE-2020-3259 be mitigated?: Organizations should regularly patch and update systems, especially firewalls and edge devices, addressing the CVEs listed in the advisory (CVE-2020-3259, CVE-2023-20269, CVE-2023-27532, CVE-2024-40711, CVE-2024-40766). Implementing Zero Trust Architecture, restricting administrative tools and privileges to necessary users only, and strengthening account security through ICAM policies and multifactor authentication (MFA) are critical defensive measures. Network defenders should review provided IOCs and MITRE ATT&CK mappings for detection and hunting.

CVSS

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Vendor

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Published

Oct 21, 2026 · 01:11

Patch

Unknown / not confirmed

Affected products

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Mitigation

#StopRansomware: SafePay Ransomware Advisory Issued by International Agencies

A joint cybersecurity advisory published on October 20, 2026, by the FBI, CISA, USSS, and international law enforcement partners outlines the tactics, techniques, and procedures (TTPs) of the SafePay ransomware group. Since August 2024, SafePay actors have targeted businesses and critical infrastructure across North America, South America, Europe, and Australia, exploiting known vulnerabilities and using credential-based attacks to gain initial access. The advisory reports at least 600 victims and provides IOCs and mitigation guidance.

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CVE-2020-3259

Quick answers

Related News

#StopRansomware: SafePay Ransomware Advisory Issued by International Agencies