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CVE-2020-4337· NVD / CVE Program· CNA ibm

IBM API Connect 2018.4.1.0 through 2018.4.1.12 could allow an attacker to launch phishing attacks by tricking the server to generate user re

IBM API Connect 2018.4.1.0 through 2018.4.1.12 could allow an attacker to launch phishing attacks by tricking the server to generate user registration emails that contain malicious URLs. IBM X-Force ID: 177933.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded

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Published
Sep 3, 2020
Updated
Jun 16, 2026
EPSS
1.1% · 63th percentile
CWE
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Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.1%

CNA vs NVD score

NVD
6.5
CNA · ibm
6.5
agree

CVSS:3.0/I:H/AV:N/PR:N/A:N/UI:R/AC:L/S:U/C:N/RC:C/E:U/RL:O

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
ibmapi connect

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ibm api connect2018.4.1.0 and later · up to 2018.4.1.12 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

  • IBM API Connect

    • 2018.4.1.0, 2018.4.1.12affected

Same product

ibm: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-13915Authentication bypass in IBM API Connect
    42Plan
  • CVE-2019-4202IBM API Connect 5.0.0.0 and 5.0.8.6 Developer Portal is vulnerable to command injection.
    41Plan
  • CVE-2019-4203IBM API Connect 5.0.0.0 and 5.0.8.6 Developer Portal can be exploited by app developers to download arbitrary files from the host OS and pot
    40Plan
  • CVE-2019-4155IBM API Connect's Developer Portal 2018.1 and 2018.4.1.3 is impacted by a privilege escalation vulnerability when integrated with an OpenID
    40Plan
  • CVE-2019-4008API Connect V2018.1 through 2018.4.1.1 is impacted by access token leak.
    40Plan
  • CVE-2018-1784IBM API Connect 5.0.0.0 and 5.0.8.4 is affected by a NoSQL Injection in MongoDB connector for the LoopBack framework.
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

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CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records