CVE-2020-14040: fedoraproject fedora Loop with Unreachable Exit Condition
Vulnerability summary
CVE-2020-14040 is a high (CVSS 7.5) Loop with Unreachable Exit Condition vulnerability in fedoraproject fedora. EPSS estimates a 1.89% chance of exploitation in the next 30 days, higher than 79.5% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 4Timeline
- 17-06-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
The x/text package before 0.3.3 for Go has a vulnerability in encoding/unicode that could lead to the UTF-16 decoder entering an infinite loop, causing the program to crash or run out of memory. An attacker could provide a single byte to a UTF16 decoder instantiated with UseBOM or ExpectBOM to trigger an infinite loop if the String function on the Decoder is called, or the Decoder is passed to golang.org/x/text/transform.String.
CVSS metrics
8 scores · 7 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · GoEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.89%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
Increase +0.05 pp
From 1.84% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard5 products
- dex-k8s-authenticatorAll versions (No fix recorded)
- k3d< 5.6.0-r11
- k3d-proxy< 5.6.0-r11
- k3d-tools< 5.6.0-r11
- vt-cli< 1.0.0-r3
Redhat5 products
- buildah< 0:1.11.6-12.el7_9
- buildah-debuginfo< 0:1.11.6-12.el7_9
- containers-common< 1:0.1.40-12.el7_9
- skopeo< 1:0.1.40-12.el7_9
- skopeo-debuginfo< 1:0.1.40-12.el7_9
Wolfi4 products
- k3d< 5.6.0-r11
- k3d-proxy< 5.6.0-r11
- k3d-tools< 5.6.0-r11
- vt-cli< 1.0.0-r3
Ubuntu2 products
- golang-golang-x-text< 0.3.2-4ubuntu0.1
- golang-x-textAll versions (No fix recorded) | < 0.0~git20170627.0.6353ef0-1ubuntu2.1
Debian1 product
- golang-golang-x-text< 0.3.3-1
Fedoraproject1 product
- fedoraEOL32
Golang1 product
- text< 0.3.3
Golang.org/x1 product
- text< 0.3.3
8 vendors · 20 products
