Is CVE-2007-1701 in the CISA KEV catalog?

No. CVE-2007-1701 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-1701?

CVE-2007-1701 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2007-1701?

CVE-2007-1701 has an EPSS score of 9.23% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2007-1701

MEDIUMEPSS 95th pctl

6.8

CVSS v2

NVD

Description

PHP 4 before 4.4.5, and PHP 5 before 5.2.1, when register_globals is enabled, allows context-dependent attackers to execute arbitrary code via deserialization of session data, which overwrites arbitrary global variables, as demonstrated by calling session_decode on a string beginning with "_SESSION|s:39:".

CWE-502Deserialization of Untrusted Data

How to fix

Remediation Available

phpNVD

Affected:>= 5.0.0, < 5.2.1Fixed in:5.2.1CVE-2007-1701derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

9.23%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Third-Party Advisory10

Other references2

Related Vulnerabilities

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-0669	High	7.2	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-35464	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-29300	Critical	9.8	100%	KEV + Ransom	-
CVE-2025-53770	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-47986	Critical	9.8	100%	KEV + Ransom	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.