CVE-2021-21702

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

3.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.9% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-02-15 04:10Z5 YR AGO

Last updated

2024-09-16 17:34Z1 YR AGO

Reserved

2021-01-04

Assigning CNA

php

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

8cd05055e69c2760b16600d0b898f17e4153c31de53ebe1578d7281ec223a301

• bugs.php.nethttps://bugs.php.net/bug.php?id=80672x_refsource_MISC
• www.debian.orgDSA-4856https://www.debian.org/security/2021/dsa-4856vendor-advisoryx_refsource_DEBIAN
• security.gentoo.orgGLSA-202105-23https://security.gentoo.org/glsa/202105-23vendor-advisoryx_refsource_GENTOO
• lists.debian.org[debian-lts-announce] 20210715 [SECURITY] [DLA 2708-1] php7.0 security updatehttps://lists.debian.org/debian-lts-announce/2021/07/msg00008.htmlmailing-listx_refsource_MLIST
• www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
• www.tenable.comhttps://www.tenable.com/security/tns-2021-14x_refsource_CONFIRM
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210312-0005/x_refsource_CONFIRM