Threats / IBM / CVE-2013-3993
CVE-2013-3993
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
IBM InfoSphere BigInsights vulnerability
IBM InfoSphere BigInsights APIs accept invalid input, allowing attackers unauthorized access to read, write, modify, or delete data.
Verdict
Today item, not a backlog item.
Improper input validation in BigInsights APIs enables unauthorized data manipulation. The vulnerability has been exploited in the wild and associated with ransomware campaigns, indicating active adversary interest in data destruction and exfiltration.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
8 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-05-25), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.05236 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: IBM, InfoSphere BigInsights. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-264 Permissions/Privileges/Access Control — weakness family: Authorization / access control.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution 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 board1
Front door — unauthenticated access narrative 1
Attacker
I craft malformed API requests with invalid input to bypass authentication or authorization controls.
Business
Attackers gain unauthorized access to sensitive data stored in BigInsights systems.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I read, modify, or delete data through the compromised APIs without proper credentials.
Business
Data integrity is compromised; business intelligence and analytics become unreliable.
3
Lateral reach — past segmentation narrative 3
Attacker
I exfiltrate or encrypt critical datasets to support ransomware extortion operations.
Business
Operations halt; ransom demands emerge; regulatory breach notifications required.
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