How severe is CVE-2014-3291?

CVE-2014-3291 has a CVSS 2.0 base score of 5.7, rated medium severity.

Is CVE-2014-3291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3291?

CVE-2014-3291 affects Cisco Wireless Lan Controller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-3291?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-3291 published?

CVE-2014-3291 was published on 2014-06-08 and last updated on 2026-06-17.

CVE-2014-3291

CVE-2014-3291 is a medium-severity vulnerability in Cisco Wireless Lan Controller with a CVSS 2.0 base score of 5.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.7)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Wireless Lan Controller
Published: 2014-06-08
Last modified: 2026-06-17

Description

Cisco Wireless LAN Controller (WLC) devices allow remote attackers to cause a denial of service (NULL pointer dereference and device restart) via a zero value in Cisco Discovery Protocol packet data that is not properly handled during SNMP polling, aka Bug ID CSCuo12321.

Frequently asked questions

What is CVE-2014-3291?: Cisco Wireless LAN Controller (WLC) devices allow remote attackers to cause a denial of service (NULL pointer dereference and device restart) via a zero value in Cisco Discovery Protocol packet data that is not properly handled during SNMP polling, aka Bug ID CSCuo12321.
How severe is CVE-2014-3291?: CVE-2014-3291 has a CVSS 2.0 base score of 5.7, rated medium severity.
Is CVE-2014-3291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-3291?: CVE-2014-3291 affects Cisco Wireless Lan Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-3291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-3291 published?: CVE-2014-3291 was published on 2014-06-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:h:cisco:wireless_lan_controller:*:*:*:*:*:*:*:*

More vulnerabilities in Cisco Wireless Lan Controller

CVE-2014-0703 — Critical (CVSS 10.0): Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition…
CVE-2020-3560 — High (CVSS 8.6): A vulnerability in Cisco Aironet Access Points (APs) could allow an unauthenticated, remote attacker to cause a denial…
CVE-2020-3559 — High (CVSS 8.6): A vulnerability in Cisco Aironet Access Point (AP) Software could allow an unauthenticated, remote attacker to cause an…
CVE-2018-0417 — High (CVSS 7.8): A vulnerability in TACACS authentication with Cisco Wireless LAN Controller (WLC) Software could allow an…
CVE-2014-0707 — High (CVSS 7.8): Cisco Wireless LAN Controller (WLC) devices 7.2, 7.3, and 7.4 before 7.4.110.0 allow remote attackers to cause a denial…
CVE-2014-0706 — High (CVSS 7.8): Cisco Wireless LAN Controller (WLC) devices 7.2 before 7.2.115.2, 7.3, and 7.4 before 7.4.110.0 allow remote attackers…

All CVEs affecting Cisco Wireless Lan Controller →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48056 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download video content. Versions prior to 2.5.0…
CVE-2026-33267 — Critical (CVSS 10.0): Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.2.0…
CVE-2026-47668 — Critical (CVSS 10.0): DbGate is cross-platform database manager. In versions 7.1.8 and prior, DbGate's JSON script runner (`POST…
CVE-2026-16117 — Critical (CVSS 10.0): Impact: @fastify/http-proxy versions up to and including 11.5.0 fail to rewrite the request prefix when the prefix…
CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →