Is CVE-2023-41763 in the CISA KEV catalog?

Yes. CVE-2023-41763 is on the CISA Known Exploited Vulnerabilities list, added 2023-10-10.

What is the CVSS severity of CVE-2023-41763?

CVE-2023-41763 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2023-41763?

CVE-2023-41763 has an EPSS score of 90.35% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2023-41763?

No published fix for CVE-2023-41763 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2023-10-31. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2023-41763

MEDIUMCISA KEVEPSS 100th pctl

5.3

CVSS v3

NVD

Description

Skype for Business Elevation of Privilege Vulnerability

CWE-918Server-Side Request Forgery (SSRF)

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Federal remediation due: 2023-10-31

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

90.35%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Skype for Business Privilege Escalation Vulnerability

Microsoft Skype for Business contains an unspecified vulnerability that allows for privilege escalation.

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Remediation due: 2023-10-31

References

Patch1

msrc.microsoft.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-21893	High	8.2	100%	KEV + Ransom	-
CVE-2021-40438	Critical	9.0	100%	KEV	Fix
CVE-2021-34473	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-26855	Critical	9.1	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-41040	High	8.8	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-28.