CVE-2023-50981
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of...
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
CVE-2023-50981- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
CVE List
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
CVE-2023-50981- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
EUVDEUVD-2023-55708
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
EUVD-2023-55708- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wrgh-jm24-7hv6
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of...
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
GHSA-wrgh-jm24-7hv6- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
OSV
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
CVE-2023-50981- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2023-50981
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
DEBIAN-CVE-2023-50981- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 4 moreShow less
OSVJLSEC-2026-1273
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
JLSEC-2026-1273- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-50981
ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER public-key data associated with squared odd numbers, such as the square of 268995137513890432434389773128616504853.
- Record
UBUNTU-CVE-2023-50981- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:13550-1 No score
libcryptopp-devel-8.9.0-2.1 on GA media
These are all security issues fixed in the libcryptopp-devel-8.9.0-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:13550-1- Updated
- 2026-11-02
OSVSUSE-SU-2024:0157-1 No score
Security update for libcryptopp
This update for libcryptopp fixes the following issues:
- CVE-2023-50981: Fixed a potential denial of service issue via crafted DER public key data (bsc#1218222).
- Record
SUSE-SU-2024:0157-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libcrypto++Debian:12 |
All versions, plus listed versions 8.7.0+git220824-18.8.0-18.8.0-28.9.0-18.9.0-1.18.9.0-1.1~exp18.9.0-28.9.0-3 |
None known |
libcrypto++Debian:13 |
All versions, plus listed versions 8.9.0-28.9.0-3 |
None known |
libcrypto++Debian:14 |
All versions, plus listed versions 8.9.0-28.9.0-3 |
None known |
cryptopp_jllJulia |
All versions | None known |
libcryptoppSUSE:Linux Enterprise Module for Basesystem 15 SP5 |
before 8.6.0-150400.3.6.1 | 8.6.0-150400.3.6.1 |
libcryptoppSUSE:Linux Enterprise Real Time 15 SP4 |
before 8.6.0-150400.3.6.1 | 8.6.0-150400.3.6.1 |
libcryptoppopenSUSE:Leap 15.5 |
before 8.6.0-150400.3.6.1 | 8.6.0-150400.3.6.1 |
libcrypto++Ubuntu:Pro:14.04:LTS |
All versions, plus listed versions 5.6.1-65.6.1-6+deb8u1build0.14.04.15.6.1-6+deb8u3build0.14.04.15.6.1-6+deb8u3ubuntu0.1~esm1 |
None known |
libcrypto++Ubuntu:Pro:16.04:LTS |
All versions, plus listed versions 5.6.1-85.6.1-95.6.1-9ubuntu0.15.6.1-9ubuntu0.1+esm1 |
None known |
libcrypto++Ubuntu:18.04:LTS |
All versions, plus listed versions 5.6.4-8 |
None known |
Show 7 moreShow less
| Package | Affected | Fixed |
|---|---|---|
libcrypto++Ubuntu:20.04:LTS |
All versions, plus listed versions 5.6.4-95.6.4-9build1 |
None known |
libcrypto++Ubuntu:22.04:LTS |
All versions, plus listed versions 8.4.0-18.6.0-2ubuntu1 |
None known |
libcrypto++Ubuntu:24.04:LTS |
All versions, plus listed versions 8.8.0-18.9.0-18.9.0-1.18.9.0-1.1build1 |
None known |
libcrypto++Ubuntu:25.10 |
All versions, plus listed versions 8.9.0-1.1build18.9.0-2 |
None known |
libcrypto++Ubuntu:26.10 |
All versions, plus listed versions 8.9.0-2build18.9.0-3 |
None known |
libcrypto++Ubuntu:26.04:LTS |
All versions, plus listed versions 8.9.0-28.9.0-2build1 |
None known |
libcryptoppopenSUSE:Tumbleweed |
before 8.9.0-2.1 | 8.9.0-2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-50981 is a high vulnerability (CVSS 7.5) in Cryptopp Crypto\+\+, published December 18, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.76%, the 55th percentile. Fixed in libcryptopp 8.6.0-150400.3.6.1.
References
github.com/weidai11/cryptopp/issues/1249
nvd.nist.gov/vuln/detail/CVE-2023-50981
security-tracker.debian.org/tracker/CVE-2023-50981
suse.com/support/update/announcement/2024/suse-su-20240157-1