CVE-2022-26910 Skype for Business and Lync Spoofing Vulnerability
Medium 5.3
Published
Updated
Check this codebase for CVE-2022-26910 and fix it if it is affected.
What it is: CVE-2022-26910 is a medium-severity vulnerability in Microsoft Skype for Business Server 2015 CU12, published on 15 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-26910 in the wild and no public exploit code.
Affected product: Microsoft Skype for Business Server 2015 CU12. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2022-26910/ (Markdown: https://insights.sbomify.com/CVE-2022-26910/index.md)
Attackers can spoof identities in Skype for Business and Lync, bypassing security controls and misleading users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-26910?
CVE-2022-26910 is a medium-severity vulnerability in Microsoft Skype for Business Server 2015 CU12, published on 15 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Skype for Business and Lync Spoofing Vulnerability
Weakness: CWE-290
Which versions are affected by CVE-2022-26910?
It affects 1 product.
Products include Microsoft Skype for Business Server.
How do I fix CVE-2022-26910?
No fix has been published for CVE-2022-26910 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-26910 being exploited?
There is no known exploitation of CVE-2022-26910 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Skype for Business Server 2015 CU12
- CVE-2023-41763 Microsoft Skype for Business Privilege Escalation
- CVE-2026-66302 Skype for Business Remote Code Execution Vulnerability
- CVE-2026-69646 Skype for Business Spoofing Vulnerability
- CVE-2026-66304 Skype for Business Information Disclosure Vulnerability
- CVE-2026-66307 Skype for Business and Lync Denial of Service Vulnerability
Sources
Also known as GHSA-gq3f-cc5w-p8w5.