CVE-2020-7060

Name: CVE-2020-7060
Creator: NVD / NIST
Published: 2020-02-10T08:15:12.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 8.89%

Last modified Jun 17, 2026

CVE-2020-7060 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. When using certain mbstring functions to convert multibyte encodings, in PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible to supply data that will cause function mbfl_filt_conv_big5_wchar to read past the allocated buffer. This may lead to information disclosure or crash.. EPSS estimates a 8.89% chance of exploitation in the next 30 days.

Description

When using certain mbstring functions to convert multibyte encodings, in PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible to supply data that will cause function mbfl_filt_conv_big5_wchar to read past the allocated buffer. This may lead to information disclosure or crash.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

8.89%

94.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Php	Php	>= 7.2.0, < 7.2.27
Php	Php	>= 7.3.0, < 7.3.14
Php	Php	>= 7.4.0, < 7.4.2
Tenable	Tenable.Sc	< 5.19.0
Oracle	Communications Diameter Signaling Router	>= 8.0, <= 8.4
Opensuse	Leap	15.1
Debian	Debian Linux	8.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.htmlMailing List, Third Party Advisory
https://bugs.php.net/bug.php?id=79037Exploit, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00030.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2020/Feb/27Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2020/Feb/31Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2021/Jan/3Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202003-57Third Party Advisory
https://security.netapp.com/advisory/ntap-20200221-0002/Mailing List, Third Party Advisory
https://usn.ubuntu.com/4279-1/Patch, Third Party Advisory
https://www.debian.org/security/2020/dsa-4626Third Party Advisory
https://www.debian.org/security/2020/dsa-4628Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
https://www.tenable.com/security/tns-2021-14Patch, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.htmlMailing List, Third Party Advisory
https://bugs.php.net/bug.php?id=79037Exploit, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00030.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2020/Feb/27Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2020/Feb/31Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2021/Jan/3Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202003-57Third Party Advisory
https://security.netapp.com/advisory/ntap-20200221-0002/Mailing List, Third Party Advisory
https://usn.ubuntu.com/4279-1/Patch, Third Party Advisory
https://www.debian.org/security/2020/dsa-4626Third Party Advisory
https://www.debian.org/security/2020/dsa-4628Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.htmlThird Party Advisory
https://www.tenable.com/security/tns-2021-14Patch, Third Party Advisory

Timeline

Published: Feb 10, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7060?

How severe is CVE-2020-7060?

CVE-2020-7060 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 8.89% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7060?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7060?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST