How severe is CVE-2023-27377?

CVE-2023-27377 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-27377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27377?

CVE-2023-27377 affects Idattend Idweb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27377?

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

When was CVE-2023-27377 published?

CVE-2023-27377 was published on 2023-10-25 and last updated on 2026-06-17.

CVE-2023-27377

CVE-2023-27377 is a high-severity vulnerability in Idattend Idweb with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Idattend Idweb
Published: 2023-10-25
Last modified: 2026-06-17

Description

Missing authentication in the StudentPopupDetails_EmergencyContactDetails method in IDAttend’s IDWeb application 3.1.052 and earlier allows extraction of sensitive student data by unauthenticated attackers.

Frequently asked questions

What is CVE-2023-27377?: Missing authentication in the StudentPopupDetails_EmergencyContactDetails method in IDAttend’s IDWeb application 3.1.052 and earlier allows extraction of sensitive student data by unauthenticated attackers.
How severe is CVE-2023-27377?: CVE-2023-27377 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-27377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27377?: CVE-2023-27377 affects Idattend Idweb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-27377 published?: CVE-2023-27377 was published on 2023-10-25 and last updated on 2026-06-17.

References

https://www.themissinglink.com.au/security-advisories/cve-2023-27377

Affected products (1)

cpe:2.3:a:idattend:idweb:*:*:*:*:*:*:*:*

More vulnerabilities in Idattend Idweb

CVE-2023-27262 — Critical (CVSS 9.8): Unauthenticated SQL injection in the GetAssignmentsDue method in IDAttend’s IDWeb application 3.1.052 and…
CVE-2023-27260 — Critical (CVSS 9.8): Unauthenticated SQL injection in the GetAssignmentsDue method in IDAttend’s IDWeb application 3.1.052 and…
CVE-2023-27255 — Critical (CVSS 9.8): Unauthenticated SQL injection in the DeleteRoomChanges method in IDAttend’s IDWeb application 3.1.052 and…
CVE-2023-27254 — Critical (CVSS 9.8): Unauthenticated SQL injection in the GetRoomChanges method in IDAttend’s IDWeb application 3.1.052 and earlier…
CVE-2023-26584 — Critical (CVSS 9.8): Unauthenticated SQL injection in the GetStudentInconsistencies method in IDAttend’s IDWeb application 3.1.052 and…
CVE-2023-26583 — Critical (CVSS 9.8): Unauthenticated SQL injection in the GetCurrentPeriod method in IDAttend’s IDWeb application 3.1.052 and earlier…

All CVEs affecting Idattend Idweb →

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 →