How severe is CVE-2021-34712?

CVE-2021-34712 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-34712 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34712?

CVE-2021-34712 primarily affects Cisco Catalyst Sd-wan Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-34712?

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

When was CVE-2021-34712 published?

CVE-2021-34712 was published on 2021-09-23 and last updated on 2026-06-17.

CVE-2021-34712

CVE-2021-34712 is a medium-severity vulnerability in Cisco Catalyst Sd-wan Manager with a CVSS 3.x base score of 5.4. 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-943.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 4.0
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-943
Affected product: Cisco Catalyst Sd-wan Manager
Published: 2021-09-23
Last modified: 2026-06-17

Description

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct cypher query language injection attacks on an affected system. This vulnerability is due to insufficient input validation by the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to the interface of an affected system. A successful exploit could allow the attacker to obtain sensitive information.

Frequently asked questions

What is CVE-2021-34712?: A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct cypher query language injection attacks on an affected system. This vulnerability is due to insufficient input validation by the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to the interface of an affected system. A successful exploit could allow the attacker to obtain sensitive information.
How severe is CVE-2021-34712?: CVE-2021-34712 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-34712 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34712?: CVE-2021-34712 primarily affects Cisco Catalyst Sd-wan Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-34712?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34712 published?: CVE-2021-34712 was published on 2021-09-23 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sd-wan-jOsuRJCc

Affected products (4)

cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:*

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