How severe is CVE-2014-7858?

CVE-2014-7858 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2014-7858 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-7858?

CVE-2014-7858 affects D-link Dnr-326 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-7858?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2014-7858 published?

CVE-2014-7858 was published on 2017-08-25 and last updated on 2026-06-17.

CVE-2014-7858

CVE-2014-7858 is a critical-severity vulnerability in D-link Dnr-326 Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: D-link Dnr-326 Firmware
Published: 2017-08-25
Last modified: 2026-06-17

Description

The check_login function in D-Link DNR-326 before 2.10 build 03 allows remote attackers to bypass authentication and log in by setting the username cookie parameter to an arbitrary string.

Frequently asked questions

What is CVE-2014-7858?: The check_login function in D-Link DNR-326 before 2.10 build 03 allows remote attackers to bypass authentication and log in by setting the username cookie parameter to an arbitrary string.
How severe is CVE-2014-7858?: CVE-2014-7858 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2014-7858 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-7858?: CVE-2014-7858 affects D-link Dnr-326 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-7858?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2014-7858 published?: CVE-2014-7858 was published on 2017-08-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:d-link:dnr-326_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in D-link Dnr-326 Firmware

CVE-2014-7859 — Critical (CVSS 9.8): Stack-based buffer overflow in login_mgr.cgi in D-Link firmware DNR-320L and DNS-320LW before 1.04b08, DNR-322L before…
CVE-2014-7857 — Critical (CVSS 9.8): D-Link DNS-320L firmware before 1.04b12, DNS-327L before 1.03b04 Build0119, DNR-326 1.40b03, DNS-320B 1.02b01, DNS-345…

All CVEs affecting D-link Dnr-326 Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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