How severe is CVE-2018-11543?

CVE-2018-11543 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-11543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11543?

CVE-2018-11543 primarily affects Ribboncommunications Sonus Sbc 1000 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-11543?

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-2018-11543 published?

CVE-2018-11543 was published on 2018-07-09 and last updated on 2026-06-17.

CVE-2018-11543

CVE-2018-11543 is a high-severity vulnerability in Ribboncommunications Sonus Sbc 1000 Firmware with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Ribboncommunications Sonus Sbc 1000 Firmware
Published: 2018-07-09
Last modified: 2026-06-17

Description

A Local File Inclusion (LFI) vulnerability in the Sonus SBC 1000 / SBC 2000 / SBC SWe Lite web interface allows for the downloading of arbitrary files 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-2018-11543?: A Local File Inclusion (LFI) vulnerability in the Sonus SBC 1000 / SBC 2000 / SBC SWe Lite web interface allows for the downloading of arbitrary files 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-2018-11543?: CVE-2018-11543 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-11543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11543?: CVE-2018-11543 primarily affects Ribboncommunications Sonus Sbc 1000 Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-11543?: 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-2018-11543 published?: CVE-2018-11543 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:o:ribboncommunications:sbc_swe_lite_firmware:6.1.0:*:*:*:*:*:*:*
cpe:2.3:o:ribboncommunications:sbc_swe_lite_firmware:7.0.0:*:*:*:*:*:*:*

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