Security readout for executives and security teams
Plain-English summary
This CVE affects certain Cisco Small Business RV routers. An attacker who already has administrative access to the router’s web management interface could crash the device or run code with root-level control. The main business concern is compromise or outage of edge network equipment, especially where management interfaces are exposed beyond trusted administrators.
Executive priority
Treat as a high-priority edge-device hygiene issue. It is not described as unauthenticated or actively exploited in the provided sources, but affected routers can sit at sensitive network boundaries and successful exploitation may lead to root-level control or outage.
Technical view
Multiple stack overflows exist in web management scripts for Cisco Small Business RV320/RV325 and RV016/RV042/RV082 routers. Insufficient boundary checks on oversized user input allow an authenticated remote administrator to trigger a crash or execute arbitrary code as root. CVSS 3.0 is 7.2 with PR:H and no user interaction required.
Likely exposure
Exposure is most likely in organizations still running the named Cisco Small Business RV router families with reachable web-based management interfaces. Risk is lower where management access is isolated, credentials are tightly controlled, and affected devices have been remediated per Cisco guidance.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation requires administrative privileges to log in to the web management interface, but successful exploitation could provide root-level device control or cause a crash.
Researcher notes
Key constraints are PR:H and authenticated web management access. The vulnerability class is CWE-119 stack overflow from insufficient boundary restrictions on user-supplied input. The bundle does not provide exploit details, fixed version specifics, or public exploitation evidence beyond the Cisco advisory and CVE metadata.
Mitigation direction
- Review Cisco’s advisory for affected releases and fixed software guidance.
- Restrict router web management access to trusted administrative networks only.
- Remove internet exposure for the management interface wherever possible.
- Audit administrator accounts and rotate credentials if access is uncertain.
- Monitor affected routers for unexpected reboots, crashes, or administrative activity.
Validation and detection
- Inventory Cisco RV320, RV325, RV016, RV042, and RV082 routers.
- Verify installed firmware against Cisco’s advisory and remediation guidance.
- Confirm management interfaces are not exposed to untrusted networks.
- Review configuration and logs for unexpected administrator access.
- Confirm only authorized administrators can reach the web interface.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-119: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-3295 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.2HighVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200617 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution VulnerabilitiesCVE reference · vendor-advisory, x_refsource_CISCO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.