CVE-2026-28532 — Integer Overflow

title: FRRouting OSPF TLV Integer Overflow - CVE-2026-28532
id: scw-2026-04-30-ai-1
status: experimental
level: critical
description: |
  Detects potential exploitation of CVE-2026-28532 by monitoring OSPF traffic (TCP port 179) originating from internal IP ranges. This rule specifically targets the conditions under which an attacker with an established OSPF adjacency could send a crafted LS Update packet with a malicious Type 10 or Type 11 Opaque LSA to trigger an integer overflow, leading to out-of-bounds memory reads and potential router crashes.
author: SCW Feed Engine (AI-generated)
date: 2026-04-30
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-28532/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: firewall
detection:
  selection:
      src_ip|contains:
          - '10.0.0.0/8'
          - '172.16.0.0/12'
          - '192.168.0.0/16'
      dst_port:
          - 179
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse