CVE-2021-1335 — Stack-based Buffer Overflow in Cisco Rv016 Multi-wan VPN Router Firmware

CWE-121 — Stack-based Buffer OverflowCWE-787 — Out-of-bounds WriteCWE-1335 — Incorrect Bitwise Shift of Integer8 documents6 sources
Severity
7.2HIGHNVD
EPSS
0.4%
top 37.04%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Cisco Rv016 Multi-wan VPN Router FirmwareCisco Rv042 Dual WAN VPN Router FirmwareCisco Rv042g Dual Gigabit WAN VPN Router Firmware+4 more
Timeline
PublishedFeb 4
Latest updateOct 1

Description

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. These vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful ex…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 1.2 | Impact: 5.9

Affected Packages7 packages

🔴Vulnerability Details

2
GHSA
GHSA-xxcc-4hjx-8q5v: Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could all↗2022-05-24
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CVEList
Cisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities↗2021-02-04
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📋Vendor Advisories

4
Red Hat
kernel: Linux kernel: integer overflow and information disclosure via undefined shift operation in drm/amdkfd↗2025-10-01
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Red Hat
kernel: gpio: wcd934x: Fix shift-out-of-bounds error↗2024-05-21
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Red Hat
expat: Large number of prefixed XML attributes on a single tag can crash libexpat↗2022-01-17
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Cisco
Cisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities↗2021-02-03
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💬Community

1
Bugzilla
CVE-2021-47102 kernel: net: marvell: prestera: fix incorrect structure access↗2024-03-05
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CVE-2021-1335 — Stack-based Buffer Overflow in Cisco | cvebase