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CVE-2020-4397· NVD / CVE Program· CNA ibm

IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 transmits sensitive information in plain text which could be obtained by an attacker using man in t

IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 transmits sensitive information in plain text which could be obtained by an attacker using man in the middle techniques. IBM X-Force ID: 179428.

MediumCVSS 5.9 · v3.1—No exploit No fix recorded
Published
Jul 22, 2020
Updated
Jun 16, 2026
EPSS
0.6% · 49th percentile
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Action score

23

Monitor

Low priority for now.

CVSS
23 / 40 · 5.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CNA vs NVD score

NVD
5.9
CNA · ibm
6.8
0.9 point gap

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

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

Affected systems

VendorProduct
ibmverify gateway

Affected versions

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

  • ibm verify gateway1.0.0
  • ibm verify gateway1.0.1

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 Verify Gateway (IVG)

    • 1.0.0, 1.0.1affected

Same product

ibm: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-4385IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own
    39Monitor
  • CVE-2020-4372IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 stores user credentials in plain in clear text which can be read by a local user.
    31Monitor
  • CVE-2020-4400IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 uses an inadequate account lockout setting that could allow a remote attacker to brute force accoun
    30Monitor
  • CVE-2020-4399IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 could allow an authenticated user to send malformed requests to cause a denial of service against t
    26Monitor
  • CVE-2020-4369IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 stores highly sensitive information in cleartext that could be obtained by a user.
    22Monitor
  • CVE-2020-4405IBM Verify Gateway (IVG) 1.0.0 and 1.0.1 could disclose potentially sensitive information to an authenticated user due to world readable log
    17Monitor

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.

—

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.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-319 · Cleartext Transmission of Sensitive Information

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

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