CVE-2020-11958

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

1.66% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Moderate. 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

2020-04-21 00:37Z6 YR AGO

Last updated

2024-08-04 11:42Z2 YR AGO

Reserved

2020-04-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-122Heap-based Buffer OverflowVariant

Data version

5.1

Document digest

e7ae6d98e17e5071fbe2343dcfc42cd4a657b883b5c0da2fade40d4082f94d16

• blogs.gentoo.orghttps://blogs.gentoo.org/ago/2020/04/19/re2c-heap-overflow-in-scannerfill-scanner-cc/x_refsource_MISC
• www.openwall.comhttps://www.openwall.com/lists/oss-security/2020/04/19/1x_refsource_MISC
• github.comhttps://github.com/skvadrik/re2c/commit/c4603ba5ce229db83a2a4fb93e6d4b4e3ec3776ax_refsource_MISC
• www.openwall.com[oss-security] 20200421 Re: re2c: heap overflow in Scanner::fill (scanner.cc)http://www.openwall.com/lists/oss-security/2020/04/21/1mailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-4338-1https://usn.ubuntu.com/4338-1/vendor-advisoryx_refsource_UBUNTU
• usn.ubuntu.comUSN-4338-2https://usn.ubuntu.com/4338-2/vendor-advisoryx_refsource_UBUNTU
• security.gentoo.orgGLSA-202007-28https://security.gentoo.org/glsa/202007-28vendor-advisoryx_refsource_GENTOO