CVE-2021-1300: cisco catalyst_sd-wan_manager
CVSS: 9.8v3.0CriticalModified
Published 20-01-2021Last modified 12-11-2024
Vulnerability summary
CVE-2021-1300 is a critical (CVSS 9.8) vulnerability in cisco catalyst_sd-wan_manager. EPSS estimates a 2.16% chance of exploitation in the next 30 days, higher than 81.8% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.0 (CVE.org)EPSS score
2.16%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 20-01-2021PublishedVulnerability first disclosed.
- 12-11-2024Last modifiedVulnerability information updated.
Description
Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
CVSS metrics
4 scores · 2 sources · 3 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
Critical 9.8Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.16%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
+0.03 pp
From 2.13% on 18-09-2026
18-09-202618-10-2026
EPSS score2.16%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
Affected systems
Cisco5 products
- catalyst_sd-wan_managerna
- cisco sd-wan solutionn/a
- ios_xe_sd-wanna
- sd-wan18.3.8 | 18.4.4 | 19.2.1 | 19.2.99
- sd-wan_vbond_orchestratorna
1 vendor · 5 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-bufovulns-B5NrSHbjVendor AdvisoryX Refsource CISCO