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Fencer Vulns
high 7.5

CVE-2023-50980 json

gf2n.cpp in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (application crash) via DER public-key data…

published 2023-12-18 2 y ago modified 2026-08-13 2 mo ago also EUVD-2023-55707 , JLSEC-2026-1272

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

gf2n.cpp in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (application crash) via DER public-key data for an F(2^m) curve, if the degree of each term in the polynomial is not strictly decreasing.

Patch / fix

  • libcrypto++ Debian 14, Debian 13 8.9.0-2

debian advisories DEBIAN-CVE-2023-50980

  • libcryptopp SLE Real Time 15 SP4, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 +1 more 8.6.0-150400.3.3.1
  • libcryptopp openSUSE Leap 15.4 5.6.5-150000.1.9.1

suse advisories SUSE-SU-2024:0030-1SUSE-SU-2023:4957-1

  • libcryptopp openSUSE Tumbleweed 8.9.0-1.1

opensuse advisories openSUSE-SU-2024:13528-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-50980 updated cvss 5.3

cryptopp: DoS via malformed DER public key file

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/weidai11/cryptopp/issues/1248 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia cryptopp_jll
all versions
 no fix listed

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.