Security readout for executives and security teams
Plain-English summary
CVE-2020-25633 is an information disclosure flaw in RESTEasy client. In affected versions, error handling around WebApplicationException may expose potentially sensitive server information to client users. The published impact is confidentiality only, with no integrity or availability impact described.
Executive priority
Treat this as a moderate confidentiality issue. Prioritize internet-facing or customer-facing services first, especially where detailed backend errors could expose system information, identifiers, or sensitive response content.
Technical view
The issue is classified as CWE-209: information exposure through an error message. RESTEasy client versions through 4.5.6.Final are affected. The CVSS 3.1 vector is network-accessible, low complexity, no privileges, no user interaction, with low confidentiality impact.
Likely exposure
Exposure is most likely in Java applications that include Red Hat RESTEasy client through version 4.5.6.Final and return or display exception details from RESTEasy client calls to users or downstream callers.
Exploitation context
The supplied sources do not report active exploitation, and the CVE is not listed as KEV. The risk is opportunistic data leakage through error paths rather than documented remote code execution or service disruption.
Researcher notes
Evidence is limited to the CVE record and Red Hat reference. The affected range is stated, but the provided bundle does not name a specific fixed version, mitigation advisory, exploit, or affected downstream products.
Mitigation direction
- Inventory applications using RESTEasy client through 4.5.6.Final.
- Check Red Hat or RESTEasy guidance for the confirmed fixed release.
- Upgrade to a vendor-confirmed non-affected version where available.
- Avoid returning raw WebApplicationException details to users.
- Sanitize error responses and log sensitive details server-side only.
Validation and detection
- Review dependency manifests and SBOMs for resteasy-client versions.
- Inspect exception handlers for raw WebApplicationException output.
- Test staging error paths for internal server details in responses.
- Review logs or reports for historical sensitive error disclosure.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-209: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-25633 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25633CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Generation of Error Message Containing Sensitive Information
Generation of Error Message Containing Sensitive Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.