CVE-2021-43113

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

5.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 92.5% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/I:H/A:H

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2021-12-15 00:00Z4 YR AGO

Last updated

2026-02-25 17:20Z8 MO AGO

Reserved

2021-11-01

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class

Data version

5.2

Document digest

8ce81164b87e5dbb2fdb8ce865baad11465268e1f3eeb908ae818d3b8409dee3

• github.comhttps://github.com/itext/itext7/releases/tag/7.1.17
• pastebin.comhttps://pastebin.com/BXnkY9YY
• lists.debian.org[debian-lts-announce] 20230118 [SECURITY] [DLA 3273-1] libitext5-java security updatehttps://lists.debian.org/debian-lts-announce/2023/01/msg00013.htmlmailing-list
• www.debian.orgDSA-5323https://www.debian.org/security/2023/dsa-5323vendor-advisory
• github.comhttps://github.com/itext/itextpdf/releases/tag/5.5.13.3