How severe is CVE-2018-16988?

CVE-2018-16988 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-2018-16988 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16988?

CVE-2018-16988 affects Buffalo Open Xdmod. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16988?

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-2018-16988 published?

CVE-2018-16988 was published on 2019-05-02 and last updated on 2026-06-17.

CVE-2018-16988

CVE-2018-16988 is a critical-severity vulnerability in Buffalo Open Xdmod 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

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-640
Affected product: Buffalo Open Xdmod
Published: 2019-05-02
Last modified: 2026-06-17

Description

An issue was discovered in Open XDMoD through 7.5.0. An authentication bypass (account takeover) exists due to a weak password reset mechanism. A brute-force attack against an MD5 rid value requires only 600 guesses in the plausible situation where the attacker knows that the victim has started a password-reset process (pass_reset.php, password_reset.php, XDUser.php) in the past few minutes.

Frequently asked questions

What is CVE-2018-16988?: An issue was discovered in Open XDMoD through 7.5.0. An authentication bypass (account takeover) exists due to a weak password reset mechanism. A brute-force attack against an MD5 rid value requires only 600 guesses in the plausible situation where the attacker knows that the victim has started a password-reset process (pass_reset.php, password_reset.php, XDUser.php) in the past few minutes.
How severe is CVE-2018-16988?: CVE-2018-16988 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-2018-16988 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16988?: CVE-2018-16988 affects Buffalo Open Xdmod. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16988?: 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-2018-16988 published?: CVE-2018-16988 was published on 2019-05-02 and last updated on 2026-06-17.

References

https://github.com/grymer/CVE/blob/master/CVE-2018-16988.md

Affected products (1)

cpe:2.3:a:buffalo:open_xdmod:*:*:*:*:*:*:*:*

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