CVE-2021-1510

mediumpriority · track · 30EPSS 0.012 · 69 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.22% (69th) EPSS

CVSS 5 · medium

Is it mine?

33 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

Multiple vulnerabilities in Cisco SD-WAN vEdge Software could allow an attacker to execute arbitrary code as the root user or cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco SD-WAN vEdge Cloudcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco SD-WAN vEdge Routercisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@cisco.com USexploitability 1.6 · impact 5.9

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USCWE-119US

affected products (33)

Products and version ranges known to be affected.

Cisco Cisco SD-WAN vEdge Cloudall versionscisco_csafUS
Cisco Cisco SD-WAN vEdge Routerall versionscisco_csafUS
Cisco Cisco SD-WAN vEdge Router≤ n/aenisa_euvdEU
Cisco Systems Inc. SD-WAN vEdge Cloud≤ 20.3.4fstec_bduRU
Cisco Systems Inc. SD-WAN vEdge Cloud20.4.0 → 20.4.1fstec_bduRU
Cisco Systems Inc. SD-WAN vEdge Cloud20.5.0 → 20.5.1fstec_bduRU
Cisco Systems Inc. SD-WAN vEdge Routers≤ 20.3.4fstec_bduRU
Cisco Systems Inc. SD-WAN vEdge Routers20.4.0 → 20.4.1fstec_bduRU
Cisco Systems Inc. SD-WAN vEdge Routers20.5.0 → 20.5.1fstec_bduRU
cisco vedge 100 firmware= 19.2.99nvdUScpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:*
cisco vedge 100 firmware20.4 → 20.4.1nvdUScpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:*
cisco vedge 100 firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:*
cisco vedge 1000 firmware= 19.2.99nvdUScpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:*
cisco vedge 1000 firmware20.4 → 20.4.1nvdUScpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:*
cisco vedge 1000 firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:*
cisco vedge 100b firmware= 19.2.99nvdUScpe:2.3:o:cisco:vedge_100b_firmware:*:*:*:*:*:*:*:*
cisco vedge 100b firmware20.4 → 20.4.1nvdUScpe:2.3:o:cisco:vedge_100b_firmware:*:*:*:*:*:*:*:*
cisco vedge 100b firmware20.5 → 20.5.1nvdUScpe:2.3:o:cisco:vedge_100b_firmware:*:*:*:*:*:*:*:*
cisco vedge 100m firmware= 19.2.99nvdUScpe:2.3:o:cisco:vedge_100m_firmware:*:*:*:*:*:*:*:*
cisco vedge 100m firmware20.4 → 20.4.1nvdUScpe:2.3:o:cisco:vedge_100m_firmware:*:*:*:*:*:*:*:*

showing 20 of 33

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-sdwan-buffover-MWGucjtOCisco SD-WAN vEdge Software Buffer Overflow Vulnerabilities2021-05-05csaf · cisco_csafUS
Multiple vulnerabilities in Cisco SD-WAN vEdge Software could allow an attacker to execute arbitrary code as the root user or cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2021-05-06modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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