CVE-2019-0798

mediumpriority · track · 25EPSS 0.021 · 81 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.08% (81st) EPSS

CVSS 4.3 · medium

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-26

A spoofing vulnerability exists when a Lync Server or Skype for Business Server does not properly sanitize a specially crafted request, aka 'Skype for Business and Lync Spoofing Vulnerability'.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.06.1mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.05.6mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.16.1mediumAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79USCWE-87US

affected products (6)

Products and version ranges known to be affected.

Microsoft Microsoft Lync Server 2013≤ July 2018 Updateenisa_euvdEU
Microsoft Skype for Business Server 2015≤ March 2019 Updateenisa_euvdEU
Microsoft Corp Microsoft Lync Server≤ 2013 July 2018 Updatefstec_bduRU
Microsoft Corp Skype for Business Server≤ 2015 March 2019 Updatefstec_bduRU
microsoft lync server= 2013nvdUScpe:2.3:a:microsoft:lync_server:*:*:*:*:*:*:*:*
microsoft skype for business server= 2015nvdUScpe:2.3:a:microsoft:skype_for_business_server:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-04-09modified 2026-06-17

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+52991 more

references (4)

External citations — patches, advisories, analysis.

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