How severe is CVE-2013-2159?

CVE-2013-2159 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-2013-2159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-2159?

CVE-2013-2159 affects Monkey-project Monkey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-2159?

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-2013-2159 published?

CVE-2013-2159 was published on 2019-12-10 and last updated on 2026-06-16.

CVE-2013-2159

CVE-2013-2159 is a critical-severity vulnerability in Monkey-project Monkey 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% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Monkey-project Monkey
Published: 2019-12-10
Last modified: 2026-06-16

Description

Monkey HTTP Daemon: broken user name authentication

Frequently asked questions

What is CVE-2013-2159?: Monkey HTTP Daemon: broken user name authentication
How severe is CVE-2013-2159?: CVE-2013-2159 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-2013-2159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-2159?: CVE-2013-2159 affects Monkey-project Monkey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-2159?: 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-2013-2159 published?: CVE-2013-2159 was published on 2019-12-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:monkey-project:monkey:1.2.1:*:*:*:*:*:*:*

More vulnerabilities in Monkey-project Monkey

CVE-2025-63658 — High (CVSS 7.5): A stack overflow in the mk_http_index_lookup function (mk_server/mk_http.c) of monkey commit f37e984 allows attackers…
CVE-2025-63657 — High (CVSS 7.5): An out-of-bounds read in the mk_mimetype_find function (mk_server/mk_mimetype.c) of monkey commit f37e984 allows…
CVE-2025-63656 — High (CVSS 7.5): An out-of-bounds read in the header_cmp function (mk_server/mk_http_parser.c) of monkey commit f37e984 allows attackers…
CVE-2025-63655 — High (CVSS 7.5): A NULL pointer dereference in the mk_http_range_parse function (mk_server/mk_http.c) of monkey commit f37e984 allows…
CVE-2025-63653 — High (CVSS 7.5): An out-of-bounds read in the mk_vhost_fdt_close function (mk_server/mk_vhost.c) of monkey commit f37e984 allows…
CVE-2025-63652 — High (CVSS 7.5): A use-after-free in the mk_http_request_end function (mk_server/mk_http.c) of monkey commit f37e984 allows attackers to…

All CVEs affecting Monkey-project Monkey →

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 →