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FRONT PAGE / CYBER / CYB-2026-06-15-F1
CYBER · ransomware threat groups · 2026-06-15SCOOP 79

CISA Adds Two Known Exploited Vulnerabilities to Catalog: Cisco Catalyst SD-WAN Manager and LiteSpeed cPanel Plugin

CISA added two actively exploited flaws to its KEV catalog on June 15: CVE-2026-20262, a directory/path traversal vulnerability in Cisco Catalyst SD-WAN Manager, and CVE-2026-54420, a UNIX symbolic link following vulnera.

·FILED ISSUE 2026-06-15·1 MIN READ·RE-VERIFIED 2026-07-02 UTC·✓ RE-VERIFIED 2026-07-02

At a glance

  • CISA added CVE-2026-20262 (Cisco Catalyst SD-WAN Manager path traversal) and CVE-2026-54420 (LiteSpeed cPanel plugin symlink following) to the KEV catalog on June 15.
  • Both additions were based on evidence of active exploitation.

VERDICT — CONFIRMED

pipeline-backfill confidence · primary + corroborating sources verified · re-verified 2026-07-02 UTC
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Generated desk illustration · The Dossier Wire · not a photograph

CISA added two actively exploited flaws to its KEV catalog on June 15: CVE-2026-20262, a directory/path traversal vulnerability in Cisco Catalyst SD-WAN Manager, and CVE-2026-54420, a UNIX symbolic link following vulnerability in the LiteSpeed cPanel plugin. Per the alert, both were added based on evidence of active exploitation, and BOD 26-04 requires federal civilian agencies to prioritize rapid remediation of catalog entries.

Key facts on file

  • CISA added CVE-2026-20262 (Cisco Catalyst SD-WAN Manager path traversal) and CVE-2026-54420 (LiteSpeed cPanel plugin symlink following) to the KEV catalog on June 15.
  • Both additions were based on evidence of active exploitation.

OFFICIAL RECORD

CISA — Cybersecurity Advisories
— (2026-06-15) · fetched at filing · archived at publication

Sources · two-source rule

PRIMARY · DOCCISA — Cybersecurity Advisories— (2026-06-15)
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Filed by the Cyber desk · verified by the verification desk · re-verified 2026-07-02 · Our standards: the two-source rule ›
CITE THIS FILE — The Dossier Wire · cyb-2026-06-15-f1 · filed 2026-06-15 · https://thedwire.com/wire/cyb-2026-06-15-f1-cisa-adds-two-known-exploited-vulnerabilities-to-catalog.html · Primary and corroborating sources listed above; archived at publication. Republishing & licensing: hello@thedwire.com.
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Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerability

Cisco's June 15 PSIRT advisory describes an arbitrary file write flaw in the web UI of Catalyst SD-WAN Manager (formerly SD-WAN vManage) that lets an authenticated remote attacker create or overwrite any file on the underlying operating system. The bug stems from improper validation of user-supplied input during a file upload process and

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