CVE-2026-48021Disclosure

MEDIUMCVSS 9.1 · CRITICAL

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

Immediate actions

  • Prioritize remediation for affected systems immediately
  • Assume compromise if assets are exposed
  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20.

5.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-295CWE-347

Priority

MEDIUM

Exploitation

ACTIVE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

  • Active exploitation appears in 1 classified signals
  • Public PoC is present in monitored signal
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 1 signal
  • PoC mentioned or linked in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 2 mentions (2026-07-25); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-07-25: 2Mentions · 2026-07-30: 1PoC Mentioned / Linked · 2026-07-30: 1Active Exploitation · 2026-07-25: 1Technical Details · 2026-07-25: 1Technical Details · 2026-07-30: 107-2507-30
Signal classification2 categories
Disclosure
266.7%
Active Exploitation
133.3%
Referenced assets2 URLs
By indicator
Classification over time
DateTotalLabels
2026-07-252
Active Exploitation1Disclosure1
2026-07-301
Disclosure1
Full discourse3 posts
  • Israel@f1tym1
    Disclosure

    CVE-2026-48021 in med-united epa4all allows TLS interception, enabling attackers to read and modify inner HTTP traffic. https://ift.tt/zNUtZ5E

    Post summary

    The CVE-2026-48021 allows TLS interception over med-united epa4all, and a link is provided that likely hosts a PoC, but no evidence of active exploitation or patch is presented.

    0000052
    1.0K followersView on X
  • 𝔸𝕟𝕠𝕟𝕪𝕞𝕠𝕦𝕤 ℍ𝕒𝕔𝕜𝕥𝕚𝕧𝕚𝕤𝕥☭⃠🅇@YourAnon_irc
    Disclosure

    Recent critical vulns: Knot Resolver DNS-over-QUIC RCE (CVE-2026-66374), epa4all TLS MiTM (CVE-2026-48021), & Check Point auth bypass (CVE-2026-16232) threaten data privacy/integrity in transit. Act now! [July 25, 2026] #Cybersecurity #NetworkSecurity #ZeroDays

    Post summary

    The post announces three critical CVEs and their general impact but offers no further technical detail, exploit code, or mitigation information.

    0000034
    16 followersView on X
  • VulDB 🛡@vuldb
    Active Exploitation

    Some increased actor activities are shown targeting med-united epa4all (CVE-2026-48021) https://vuldb.com/vuln/383004/cti

    Post summary

    The message indicates increased attacker activity targeting CVE-2026-48021 but offers no technical, patch, or exploit details.

    00000107
    2.3K followersView on X

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