How severe is CVE-2017-4989?

CVE-2017-4989 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-2017-4989 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-4989?

CVE-2017-4989 primarily affects Emc Avamar Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-4989?

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-2017-4989 published?

CVE-2017-4989 was published on 2017-06-21 and last updated on 2026-06-17.

CVE-2017-4989

CVE-2017-4989 is a critical-severity vulnerability in Emc Avamar Server with a CVSS 3.x base score of 9.8. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Emc Avamar Server
Published: 2017-06-21
Last modified: 2026-06-17

Description

In EMC Avamar Server Software 7.3.1-125, 7.3.0-233, 7.3.0-226, 7.2.1-32, 7.2.1-31, 7.2.0-401, an unauthenticated remote attacker may potentially bypass the authentication process to gain access to the system maintenance page. This may be exploited by an attacker to view sensitive information, perform software updates, or run maintenance workflows.

Frequently asked questions

What is CVE-2017-4989?: In EMC Avamar Server Software 7.3.1-125, 7.3.0-233, 7.3.0-226, 7.2.1-32, 7.2.1-31, 7.2.0-401, an unauthenticated remote attacker may potentially bypass the authentication process to gain access to the system maintenance page. This may be exploited by an attacker to view sensitive information, perform software updates, or run maintenance workflows.
How severe is CVE-2017-4989?: CVE-2017-4989 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-2017-4989 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-4989?: CVE-2017-4989 primarily affects Emc Avamar Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-4989?: 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-2017-4989 published?: CVE-2017-4989 was published on 2017-06-21 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:emc:avamar_server:7.2.0-401:*:*:*:*:*:*:*
cpe:2.3:a:emc:avamar_server:7.2.1-31:*:*:*:*:*:*:*
cpe:2.3:a:emc:avamar_server:7.2.1-32:*:*:*:*:*:*:*
cpe:2.3:a:emc:avamar_server:7.3.0-226:*:*:*:*:*:*:*
cpe:2.3:a:emc:avamar_server:7.3.0-233:*:*:*:*:*:*:*
cpe:2.3:a:emc:avamar_server:7.3.1-125:*:*:*:*:*:*:*

More vulnerabilities in Emc Avamar Server

CVE-2017-15548 — Critical (CVSS 9.8): An issue was discovered in EMC Avamar Server 7.1.x, 7.2.x, 7.3.x, 7.4.x, 7.5.0; EMC NetWorker Virtual Edition (NVE)…
CVE-2017-4990 — Critical (CVSS 9.8): In EMC Avamar Server Software 7.4.1-58, 7.4.0-242, 7.3.1-125, 7.3.0-233, 7.3.0-226, an unauthorized attacker may…
CVE-2016-0903 — Critical (CVSS 9.1): Avamar Data Store (ADS) and Avamar Virtual Edition (AVE) in EMC Avamar Server before 7.3.0-233 rely on client-side…
CVE-2013-3274 — Critical (CVSS 9.0): EMC Avamar Server and Avamar Virtual Edition before 7.0 on Data Store Gen3, Gen4, and Gen4s platforms do not properly…
CVE-2017-15550 — High (CVSS 8.8): An issue was discovered in EMC Avamar Server 7.1.x, 7.2.x, 7.3.x, 7.4.x, 7.5.0; EMC NetWorker Virtual Edition (NVE)…
CVE-2017-15549 — High (CVSS 8.8): An issue was discovered in EMC Avamar Server 7.1.x, 7.2.x, 7.3.x, 7.4.x, 7.5.0; EMC NetWorker Virtual Edition (NVE)…

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
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…

Browse all CWE-287 (Improper Authentication) vulnerabilities →