CVE-2020-10543: fedoraproject fedora Integer Overflow or Wraparound
Vulnerability summary
CVE-2020-10543 is a high (CVSS 8.2) Integer Overflow or Wraparound vulnerability in fedoraproject fedora. EPSS estimates a 11.33% chance of exploitation in the next 30 days, higher than 95.9% of scored vulnerabilities.
Severe, CVSS 8.2 (NVD); no exploitation reported by the 5 checked sources; EPSS 11% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 15 · Related 7Timeline
- 05-06-2020PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated8.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- OSV · UbuntuEcosystem advisory · calculated8.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- OSV · DebianEcosystem advisory · calculated8.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS trend
Probability
11.33%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
No change 0.00 pp
From 11.33% 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 cause- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Oracle12 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 | 46.7 | 46.8 | 46.9
- communications_lsms≥ 13.1, ≤ 13.4
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
7 vendors · 18 products
References
23 links- lists.opensuse.org/opensuse-security-announce/2020-06/msg00044.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- github.com/perl/perl5/commit/897d1f7fd515b828e4b198d8b8bef76c6faf03edX Refsource CONFIRMPatchThird Party Advisory
