VulnSocial

CVE-2019-5591Active Exploitation(fortinet / fortios)

LOWCVSS 6.5 · MEDIUMCISA KEV

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

  • Prioritize remediation for fortinet fortios systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server.

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3.5/ 10 priority

Sources & remediation

Listed in the CISA Known Exploited Vulnerabilities catalog. Federal remediation due date: 2022-05-03. Apply updates per vendor instructions.

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-306

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • fortios

Threat summary

  • Active exploitation appears in 1 classified signals
  • 1 mentions across 1 observed day

What's happening

  • Active exploitation reported across 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
fortinet
Products
fortios

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-15: 1Active Exploitation · 2026-08-15: 108-15
Signal classification1 categories
Active Exploitation
1100.0%
Full discourse1 post
  • kokumօtօ@__kokumoto
    Active Exploitation

    10件の脆弱性でランサムウェアによる悪用が確認された。米国サイバーセキュリティ・社会基盤安全保障庁(CISA)の既知の悪用された脆弱性が更新。対象は以下。 - CVE-2025-60710 (Windows) - CVE-2020-29574 (CyberoamOS) - CVE-2020-0618 (SQL Server) - CVE-2021-4034 (polkit) - CVE-2016-0189 (IE) - CVE-2022-21882 (Windows) - CVE-2019-5591 (FortiOS) - CVE-2019-0803 (Windows) - CVE-2018-0802 (Office) - CVE-2020-0968 (IE)

    Post summary

    CISA updated its known‑exploited vulnerability list, noting ransomware exploitation confirmed for 10 CVEs.

    01121102.7K
    7.8K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
OSfortinetfortios---

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