CVE-2018-12421

CVE-2018-12421 is a critical-severity vulnerability in Ltb-project Ldap Tool Box Self Service Password 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-640.

Key facts

Description

LTB (aka LDAP Tool Box) Self Service Password before 1.3 allows a change to a user password (without knowing the old password) via a crafted POST request, because the ldap_bind return value is mishandled and the PHP data type is not constrained to be a string.

Frequently asked questions

What is CVE-2018-12421?
LTB (aka LDAP Tool Box) Self Service Password before 1.3 allows a change to a user password (without knowing the old password) via a crafted POST request, because the ldap_bind return value is mishandled and the PHP data type is not constrained to be a string.
How severe is CVE-2018-12421?
CVE-2018-12421 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-2018-12421 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12421?
CVE-2018-12421 affects Ltb-project Ldap Tool Box Self Service Password. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12421?
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-2018-12421 published?
CVE-2018-12421 was published on 2018-06-14 and last updated on 2026-06-17.

References

Affected products (1)

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