CVE-2020-12723: fedoraproject fedora
Vulnerability summary
CVE-2020-12723 is a high (CVSS 7.5) vulnerability in fedoraproject fedora. EPSS estimates a 5.97% chance of exploitation in the next 30 days, higher than 93.3% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 6% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 7Timeline
- 05-06-2020PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.
CVSS metrics
6 scores · 5 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- 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
EPSS trend
Probability
5.97%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
No change 0.00 pp
From 5.97% 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.
Redhat33 products
- perl< 4:5.26.3-417.el8_3 | < 4:5.26.3-417.el8_2
- perl-Attribute-Handlers< 0:0.99-417.el8_3 | < 0:0.99-417.el8_2
- perl-debuginfo< 4:5.26.3-417.el8_3 | < 4:5.26.3-417.el8_2
- perl-debugsource< 4:5.26.3-417.el8_3 | < 4:5.26.3-417.el8_2
- perl-devel< 4:5.26.3-417.el8_3 | < 4:5.26.3-417.el8_2
Oracle11 products
- communications_billing_and_revenue_management12.0.0.2.0 | 12.0.0.3.0
- communications_diameter_signaling_router≥ 8.0.0, ≤ 8.5.0
- communications_eagle_application_processor≥ 16.1.0, ≤ 16.4.0
- communications_eagle_lnp_application_processor10.1 | 10.2
- communications_lsms≥ 13.1, ≤ 13.4
Netapp2 products
Alpine1 product
- perl< 5.28.3-r0 | < 5.30.3-r0 | < 5.26.3-r1
Debian1 product
- perl< 5.30.3-1
Fedoraproject1 product
- fedoraEOL31
Opensuse1 product
- leapEOL15.1
Perl1 product
- perl< 5.30.3
Ubuntu1 product
- perl< 5.18.2-2ubuntu1.7+esm3 | < 5.22.1-9ubuntu0.9 | < 5.26.1-6ubuntu0.5 | < 5.30.0-9ubuntu0.2
9 vendors · 52 products
References
34 links- lists.opensuse.org/opensuse-security-announce/2020-06/msg00044.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- github.com/perl/perl5/commit/66bbb51b93253a3f87d11c2695cfb7bdb782184aX Refsource CONFIRMPatchThird Party Advisory
