How severe is CVE-2018-0103?

CVE-2018-0103 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-0103 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0103?

CVE-2018-0103 primarily affects Cisco Webex Business Suite. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-0103?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-0103 published?

CVE-2018-0103 was published on 2018-01-04 and last updated on 2026-06-17.

CVE-2018-0103

CVE-2018-0103 is a high-severity vulnerability in Cisco Webex Business Suite with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 9.3
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Cisco Webex Business Suite
Published: 2018-01-04
Last modified: 2026-06-17

Description

A Buffer Overflow vulnerability in Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow a local attacker to execute arbitrary code on the system of a user. The attacker could exploit this vulnerability by sending the user a link or email attachment with a malicious ARF file and persuading the user to follow the link or launch the file. Successful exploitation could allow the attacker to execute arbitrary code on the user's system. This vulnerability affects Cisco WebEx Business Suite meeting sites, Cisco WebEx Meetings sites, Cisco WebEx Meetings Server, and Cisco WebEx ARF players. Cisco Bug IDs: CSCvg78835, CSCvg78837, CSCvg78839.

Frequently asked questions

What is CVE-2018-0103?: A Buffer Overflow vulnerability in Cisco WebEx Network Recording Player for Advanced Recording Format (ARF) files could allow a local attacker to execute arbitrary code on the system of a user. The attacker could exploit this vulnerability by sending the user a link or email attachment with a malicious ARF file and persuading the user to follow the link or launch the file. Successful exploitation could allow the attacker to execute arbitrary code on the user's system. This vulnerability affects Cisco WebEx Business Suite meeting sites, Cisco WebEx Meetings sites, Cisco WebEx Meetings Server, and Cisco WebEx ARF players. Cisco Bug IDs: CSCvg78835, CSCvg78837, CSCvg78839.
How severe is CVE-2018-0103?: CVE-2018-0103 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-0103 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0103?: CVE-2018-0103 primarily affects Cisco Webex Business Suite. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-0103?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-0103 published?: CVE-2018-0103 was published on 2018-01-04 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:cisco:webex_business_suite:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_meetings_server:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:webex_network_recording_player:-:*:*:*:*:*:*:*

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