How severe is CVE-2018-11541?

CVE-2018-11541 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11541 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11541?

CVE-2018-11541 primarily affects Ribboncommunications Sbc Swe Lite Web. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-11541?

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

When was CVE-2018-11541 published?

CVE-2018-11541 was published on 2018-07-09 and last updated on 2026-06-17.

CVE-2018-11541

CVE-2018-11541 is a critical-severity vulnerability in Ribboncommunications Sbc Swe Lite Web with a CVSS 3.x base score of 9.8. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Ribboncommunications Sbc Swe Lite Web
Published: 2018-07-09
Last modified: 2026-06-17

Description

A root privilege escalation vulnerability in the Sonus SBC 1000 / SBC 2000 / SBC SWe Lite web interface allows unauthorised access to privileged content via an unspecified vector. It affects the 1000 and 2000 devices 6.0.x up to Build 446, 6.1.x up to Build 492, and 7.0.x up to Build 485. It affects the SWe Lite devices 6.1.x up to Build 111 and 7.0.x up to Build 140.

Frequently asked questions

What is CVE-2018-11541?: A root privilege escalation vulnerability in the Sonus SBC 1000 / SBC 2000 / SBC SWe Lite web interface allows unauthorised access to privileged content via an unspecified vector. It affects the 1000 and 2000 devices 6.0.x up to Build 446, 6.1.x up to Build 492, and 7.0.x up to Build 485. It affects the SWe Lite devices 6.1.x up to Build 111 and 7.0.x up to Build 140.
How severe is CVE-2018-11541?: CVE-2018-11541 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11541 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11541?: CVE-2018-11541 primarily affects Ribboncommunications Sbc Swe Lite Web. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-11541?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-11541 published?: CVE-2018-11541 was published on 2018-07-09 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:o:ribboncommunications:sonus_sbc_1000_firmware:6.0.0:*:*:*:*:*:*:*
cpe:2.3:o:ribboncommunications:sonus_sbc_1000_firmware:6.1.0:*:*:*:*:*:*:*
cpe:2.3:o:ribboncommunications:sonus_sbc_1000_firmware:7.0.0:*:*:*:*:*:*:*
cpe:2.3:o:ribboncommunications:sonus_sbc_2000_firmware:6.0.0:*:*:*:*:*:*:*
cpe:2.3:o:ribboncommunications:sonus_sbc_2000_firmware:6.1.0:*:*:*:*:*:*:*
cpe:2.3:o:ribboncommunications:sonus_sbc_2000_firmware:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ribboncommunications:sbc_swe_lite_web:6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ribboncommunications:sbc_swe_lite_web:7.0.0:*:*:*:*:*:*:*

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