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CVE-2020-4253· NVD / CVE Program· CNA ibm

IBM Content Navigator 3.0CD does not invalidate session after logout which could allow an authenticated user to impersonate another user on

IBM Content Navigator 3.0CD does not invalidate session after logout which could allow an authenticated user to impersonate another user on the system. IBM X-Force ID: 175559.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Mar 24, 2020
Updated
Jun 16, 2026
EPSS
0.9% · 58th percentile
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Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CNA vs NVD score

NVD
8.8
CNA · ibm
6.3
2.5 point gap

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

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

Affected systems

VendorProduct
ibmcontent navigator

Affected versions

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

  • ibm content navigator3.0.0

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 Content Navigator

    • 3.0CDaffected

Same product

ibm: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-4034IBM Content Navigator 3.0CD is could allow an attacker to execute arbitrary code on a user's workstation.
    36Monitor
  • CVE-2022-43581IBM Content Navigator code execution
    35Monitor
  • CVE-2018-1364IBM Content Navigator 2.0 and 3.0 is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data.
    33Monitor
  • CVE-2018-1366IBM Content Navigator 2.0 and 3.0 is vulnerable to Comma Separated Value (CSV) Injection.
    31Monitor
  • CVE-2021-29714IBM Content Navigator 3.0.CD could allow a malicious user to cause a denial of service due to improper input validation.
    26Monitor
  • CVE-2020-4757IBM FileNet Content Manager and IBM Content Navigator 3.0.CD is vulnerable to stored cross-site scripting.
    25Monitor

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.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-613 · Insufficient Session Expiration

CVSS vector

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

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.

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.

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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