CVE-2019-25051

Name: CVE-2019-25051
Creator: NVD / NIST
Published: 2021-07-20T07:15:07.677+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2019-25051 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. objstack in GNU Aspell 0.60.8 has a heap-based buffer overflow in acommon::ObjStack::dup_top (called from acommon::StringMap::add and acommon::Config::lookup_list).. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

objstack in GNU Aspell 0.60.8 has a heap-based buffer overflow in acommon::ObjStack::dup_top (called from acommon::StringMap::add and acommon::Config::lookup_list).

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.55%

41.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Gnu	Aspell	0.60.8
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Fedoraproject	Fedora	34

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18462Third Party Advisory
https://github.com/gnuaspell/aspell/commit/0718b375425aad8e54e1150313b862e4c6fd324aPatch, Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/aspell/OSV-2020-521.yamlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00021.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H7E4EI7F6TVN7K6XWU6HSANMCOKKEREE/
https://www.debian.org/security/2021/dsa-4948Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18462Third Party Advisory
https://github.com/gnuaspell/aspell/commit/0718b375425aad8e54e1150313b862e4c6fd324aPatch, Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/aspell/OSV-2020-521.yamlThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00021.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H7E4EI7F6TVN7K6XWU6HSANMCOKKEREE/
https://www.debian.org/security/2021/dsa-4948Third Party Advisory

Timeline

Published: Jul 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-25051?

objstack in GNU Aspell 0.60.8 has a heap-based buffer overflow in acommon::ObjStack::dup_top (called from acommon::StringMap::add and acommon::Config::lookup_list).

How severe is CVE-2019-25051?

CVE-2019-25051 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2019-25051?

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-2019-25051?

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

Scan your code now

Source: NVD / NIST