CVE-2022-20689
CVE-2022-20689 is a medium-severity vulnerability in Cisco Ata 190 Firmware with a CVSS 3.x base score of 5.3. 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-1284.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 1% (46th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1284
- Affected product: Cisco Ata 190 Firmware
- Published:
- Last modified:
Description
Multiple vulnerabilities in the Cisco Discovery Protocol functionality of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an unauthenticated, adjacent attacker to cause Cisco Discovery Protocol memory corruption on an affected device. These vulnerabilities are due to missing length validation checks when processing Cisco Discovery Protocol messages. An attacker could exploit these vulnerabilities by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause an out-of-bounds read of the valid Cisco Discovery Protocol packet data, which could allow the attacker to cause corruption in the internal Cisco Discovery Protocol database of the affected device.
Frequently asked questions
- What is CVE-2022-20689?
- Multiple vulnerabilities in the Cisco Discovery Protocol functionality of Cisco ATA 190 Series Analog Telephone Adapter firmware could allow an unauthenticated, adjacent attacker to cause Cisco Discovery Protocol memory corruption on an affected device. These vulnerabilities are due to missing length validation checks when processing Cisco Discovery Protocol messages. An attacker could exploit these vulnerabilities by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause an out-of-bounds read of the valid Cisco Discovery Protocol packet data, which could allow the attacker to cause corruption in the internal Cisco Discovery Protocol database of the affected device.
- How severe is CVE-2022-20689?
- CVE-2022-20689 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2022-20689 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-20689?
- CVE-2022-20689 primarily affects Cisco Ata 190 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-20689?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2022-20689 published?
- CVE-2022-20689 was published on 2022-12-12 and last updated on 2026-06-17.
References
Affected products (9)
- cpe:2.3:o:cisco:ata_190_firmware:-:*:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:*:*:*:*:multiplatform:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:*:*:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:-:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr1:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr2:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr3:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_191_firmware:12.0.1:sr4:*:*:on-premises:*:*:*
- cpe:2.3:o:cisco:ata_192_firmware:*:*:*:*:multiplatform:*:*:*
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