How severe is CVE-2025-20158?

CVE-2025-20158 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-20158 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-20158?

CVE-2025-20158 primarily affects Cisco Video Phone 8875 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-20158?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-20158 have an EU (EUVD) identifier?

Yes. CVE-2025-20158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4670.

When was CVE-2025-20158 published?

CVE-2025-20158 was published on 2025-02-19 and last updated on 2026-06-17.

CVE-2025-20158

CVE-2025-20158 is a medium-severity vulnerability in Cisco Video Phone 8875 Firmware with a CVSS 3.x base score of 4.4. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4670
Weakness: CWE-200
Affected product: Cisco Video Phone 8875 Firmware
Published: 2025-02-19
Last modified: 2026-06-17

Description

A vulnerability in the debug shell of Cisco Video Phone 8875 and Cisco Desk Phone 9800 Series could allow an authenticated, local attacker to access sensitive information on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials with SSH access on the affected device. SSH access is disabled by default. This vulnerability is due to insufficient validation of user-supplied input by the debug shell of an affected device. An attacker could exploit this vulnerability by sending a crafted SSH client command to the CLI. A successful exploit could allow the attacker to access sensitive information on the underlying operating system.

Frequently asked questions

What is CVE-2025-20158?: A vulnerability in the debug shell of Cisco Video Phone 8875 and Cisco Desk Phone 9800 Series could allow an authenticated, local attacker to access sensitive information on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials with SSH access on the affected device. SSH access is disabled by default. This vulnerability is due to insufficient validation of user-supplied input by the debug shell of an affected device. An attacker could exploit this vulnerability by sending a crafted SSH client command to the CLI. A successful exploit could allow the attacker to access sensitive information on the underlying operating system.
How severe is CVE-2025-20158?: CVE-2025-20158 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-20158 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-20158?: CVE-2025-20158 primarily affects Cisco Video Phone 8875 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-20158?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-20158 have an EU (EUVD) identifier?: Yes. CVE-2025-20158 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4670.
When was CVE-2025-20158 published?: CVE-2025-20158 was published on 2025-02-19 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-info-disc-YyxsWStK

Affected products (5)

cpe:2.3:o:cisco:video_phone_8875_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:desk_phone_9871_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:desk_phone_9841_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:desk_phone_9851_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:desk_phone_9861_firmware:*:*:*:*:*:*:*:*

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