Security readout for executives and security teams
Plain-English summary
This medium-severity flaw may let a nearby, low-privileged attacker obtain sensitive information from an affected Skype for Business Server. The supplied evidence does not indicate data modification, service disruption, or confirmed active exploitation.
Executive priority
Treat this as a scheduled but prompt remediation item, especially where Skype servers handle sensitive communications or have broad internal reachability. Escalate priority if an affected, unpatched server is accessible from less-trusted network segments.
Technical view
CVE-2024-20695 is an information-disclosure vulnerability associated with improper authorization (CWE-284) in Skype for Business Server 2019 CU7. Its CVSS 3.1 score is 5.7. Exploitation requires adjacent network access and low privileges, needs no user interaction, and has potentially high confidentiality impact.
Likely exposure
Exposure is limited to organizations running Skype for Business Server 2019 CU7, according to the supplied affected-product record. Actual exposure depends on deployment, network reachability, attacker authentication level, and whether Microsoft's security update has been applied.
Exploitation context
The CVSS vector indicates low-complexity exploitation by an adjacent-network attacker who already has low privileges, without user interaction. CISA KEV status is false, and the supplied sources provide no evidence of active exploitation or public weaponization.
Researcher notes
The supplied record identifies Skype for Business Server 2019 CU7 but provides no detailed affected version range or disclosure mechanism. Conclusions about vulnerable components, exposed data, or exploit availability cannot be made from this bundle. The CVSS metrics support confidentiality-focused testing only.
Mitigation direction
- Review Microsoft's CVE advisory and apply its published security update.
- Prioritize affected servers reachable from untrusted or broadly accessible adjacent networks.
- Restrict network access and low-privileged accounts according to operational requirements.
- Monitor Microsoft guidance for revised affected-version or remediation information.
Validation and detection
- Inventory Skype for Business Server instances and identify 2019 CU7 deployments.
- Verify installed security-update status against Microsoft's CVE advisory.
- Confirm network segmentation limits adjacent access to affected servers.
- Review authentication and access logs for unexpected low-privileged activity.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2024-20695 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
- 5.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
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.
SSVC decision data
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:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C2.13.6microsoftVulnerability scoring details
Base CVSS 3.1 score
5.7MediumVector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Skype for Business Information Disclosure VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.