How severe is CVE-2018-7739?

CVE-2018-7739 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-2018-7739 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 55% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7739?

CVE-2018-7739 affects Antsle Antman. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-7739?

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-2018-7739 published?

CVE-2018-7739 was published on 2018-03-07 and last updated on 2026-06-17.

CVE-2018-7739

CVE-2018-7739 is a critical-severity vulnerability in Antsle Antman with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 55% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 55% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Antsle Antman
Published: 2018-03-07
Last modified: 2026-06-17

Description

antsle antman before 0.9.1a allows remote attackers to bypass authentication via invalid characters in the username and password parameters, as demonstrated by a username=>&password=%0a string to the /login URI. This allows obtaining root permissions within the web management console, because the login process uses Java's ProcessBuilder class and a bash script called antsle-auth with insufficient input validation.

Frequently asked questions

What is CVE-2018-7739?: antsle antman before 0.9.1a allows remote attackers to bypass authentication via invalid characters in the username and password parameters, as demonstrated by a username=>&password=%0a string to the /login URI. This allows obtaining root permissions within the web management console, because the login process uses Java's ProcessBuilder class and a bash script called antsle-auth with insufficient input validation.
How severe is CVE-2018-7739?: CVE-2018-7739 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-2018-7739 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 55% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7739?: CVE-2018-7739 affects Antsle Antman. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-7739?: 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-2018-7739 published?: CVE-2018-7739 was published on 2018-03-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:antsle:antman:*:*:*:*:*:*:*:*

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