basicsecurity.net
Proof, not just disclosure.
Threats / IBM / CVE-2020-4430
CVE-2020-4430 · EUVD no mirror located · GCVE no mirror located Verified 2026-06-22

IBM Data Risk Manager vulnerability

IBM Data Risk Manager contains a directory traversal vulnerability allowing authenticated remote attackers to download arbitrary files by crafting malicious URL requests.

Verdict

Today item — known-exploited.

A path traversal flaw in IBM Data Risk Manager enables authenticated users to bypass directory restrictions and exfiltrate sensitive files. The high EPSS score and active exploitation indicate immediate risk to organizations running this product.

CISA KEV Yes · 2021-11-033EPSS 0.68544 (verify live)4
01

Is it exploitable?

— the evidence, ranked above the score
Reported exploitation
1 independent public report of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
cisa.gov ↗Confirmed
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
CISA KEV ↗Confirmed
Probability (EPSS)
EPSS 0.68544 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: IBM, Data Risk Manager. Confirm exact fixed builds in the vendor advisory.
NVD ↗Reported
Weakness (CWE)
Mapped to CWE-22 Path Traversal — weakness family: Path traversal / file.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
NVD ↗Reported
WeaknessCWE-22 · Path TraversalPath traversal / file
02

Who’s exploiting it?

— attribution turns risk into urgency
Attribution not established

No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.

03

Why it matters

— the attack path, told twice: adversary, then board
1

Front door — unauthenticated access narrative 1

Attacker
I authenticate to the application using valid credentials.
Business
Legitimate user accounts are compromised or insider threats exploit existing access.
2

Keys to the kingdom — privilege/identity takeover narrative 2

Attacker
I craft a URL with directory traversal sequences to navigate outside intended directories.
Business
Access controls fail to properly validate file paths, exposing the application's security model as flawed.
3

Lateral reach — past segmentation narrative 3

Attacker
I download arbitrary files from the system, including configuration files, credentials, and sensitive data.
Business
Confidential information is exfiltrated, including system secrets and business-critical data stored on the server.
04

What to do

— defensible action
  • Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05

Coverage & confidence

— what we know, and what we don’t

Established (cited)

  • KEV listing (CISA)
  • EPSS probability (FIRST)
  • 1 reported-exploitation source(s)
  • CWE weakness mapping (NVD)
  • Catalogued by ibm (CNA)
  • Coverage gaps — stated, not hidden

  • No EUVD / GCVE mirror in feed — single-authority dependency for the identifier.
  • EPSS & exposure are time-varying; verify live at the source.
  • Threat-actor attribution not established from feed data — absence of a name is not absence of compromise.
  • No finder/reporter credit recorded in the public CVE entry — the work behind this find is unattributed.
  • Disclosure & credit2
    Catalogued by ibmCNA
    Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.