CVE-2021-30184
GNU Chess 6.2.7 allows attackers to execute arbitrary code via crafted PGN (Portable Game Notation) data. This is related to a buffer overflow in the use of a .tmp.epd temporary file in the
02 Description
GNU Chess 6.2.7 allows attackers to execute arbitrary code via crafted PGN (Portable Game Notation) data. This is related to a buffer overflow in the use of a .tmp.epd temporary file in the
03 Exploitation and scoring
- 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
- 1.76% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 77.6% 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.
04 Metadata
- Published
- 2021-04-07 11:30Z5 YR AGO
- Last updated
- 2025-01-12 21:02Z1 YR AGO
- Reserved
- 2021-04-07
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- a27eb13ac104375d7ad68320bec2b38699acbf3780dabb242ff41978fa43fb35
05 Affected products
06 References
- lists.gnu.orghttps://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00000.html
- lists.gnu.orghttps://lists.gnu.org/archive/html/bug-gnu-chess/2021-04/msg00001.html
- lists.fedoraproject.orgFEDORA-2021-a58cb9bc7ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XXOTMUSBVUZNA3JMPG6BU37DQW2YOJWS/
- lists.fedoraproject.orgFEDORA-2021-2c714d311fhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QC74RWMDLSQGV6Z3ZABNTPABB33S4YNF/
- lists.fedoraproject.orgFEDORA-2021-ff3297913bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOGPLC77ZL2FACSOE5MWDS3YH3RBNQAQ/
- security.gentoo.orgGLSA-202107-28https://security.gentoo.org/glsa/202107-28
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/01/msg00007.html
07 Fixed in
Arch Linux
- gnuchess No fix yet
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- gnuchess Fixed in 6.2.7-1+deb12u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- gnuchess Fixed in 6.2.9-0.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- gnuchess Fixed in 6.2.9-0.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- gnuchess Fixed in 6.2.7-1+deb11u1build0.22.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- gnuchess Fixed in 6.2.7-1+deb11u1build0.24.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.