CVE-2020-3516
Last modified
CVE-2020-3516 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device. The vulnerability is due to insufficient input validation during authentication. EPSS estimates a 1.67% chance of exploitation in the next 30 days.
Description
A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device. The vulnerability is due to insufficient input validation during authentication. An attacker could exploit this vulnerability by entering unexpected characters during a valid authentication. A successful exploit could allow the attacker to crash the web server on the device, which must be manually recovered by disabling and re-enabling the web server.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | < 16.9.6 |
| Cisco | Ios Xe | >= 16.12.0, < 16.12.2 |
| Cisco | Ios Xe | >= 17.1.0, < 17.1.1 |
| Cisco | Ios Xe | 17.2.1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-35154Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35155Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35156Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35157Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35158Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35159Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35160Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35161Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35162Rejected reason: CVE ID was once reserved, but never used.
- CVE-2020-35163Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, an…9.8
- CVE-2020-35164Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, an…8.1
- CVE-2020-35165Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, an…4.7
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Scan your code nowSource: NVD / NIST