CVE-2020-29562: fedoraproject fedora Reachable Assertion
Vulnerability summary
CVE-2020-29562 is a medium (CVSS 4.8) Reachable Assertion vulnerability in fedoraproject fedora. EPSS estimates a 1.68% chance of exploitation in the next 30 days, higher than 76.9% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 4.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 7Timeline
- 04-12-2020PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated4.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated4.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
- NVDNIST4.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.68%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
Increase +0.15 pp
From 1.53% 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
1 foundExploit Reference (sourceware.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- glibc< 2.31-7
Fedoraproject1 product
- fedoraEOL32
Gnu1 product
- glibc≥ 2.30, ≤ 2.32
Netapp1 product
- e-series_santricity_os_controller≥ 11.0.0, ≤ 11.60.3
Ubuntu1 product
- glibc< 2.27-3ubuntu1.5 | < 2.31-0ubuntu9.7
5 vendors · 5 products
References
12 links- sourceware.org/bugzilla/show_bug.cgi?id=26923X Refsource MISCExploitIssue TrackingPatchThird Party Advisory
