CVE-2019-10764: In elliptic-php versions priot to 1.0.6, Timing attacks might be possible which can result in practical recove

Q: How do I fix CVE-2019-10764?

elliptic-php: upgrade to 1.0.6. Exact commands for each OS are on this page.

Q: Is CVE-2019-10764 being exploited?

CVE-2019-10764 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-10764 affect?

CVE-2019-10764 affects elliptic-php. Severity is high (CVSS 7.4). In elliptic-php versions priot to 1.0.6, Timing attacks might be possible which can result in practical recovery of the long-term private key generated by the library under certain conditions. Leakage of a bit-length of the scalar during sc

Q: How urgent is CVE-2019-10764?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.4REMOTEUPGRADE

CVE-2019-10764 is a high-severity flaw (CVSS 7.4) affecting elliptic-php. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In elliptic-php versions priot to 1.0.6, Timing attacks might be possible which can result in practical recovery of the long-term private key generated by the library under certain conditions. Leakage of a bit-length of the scalar during scalar multiplication is possible on an elliptic curve which might allow practical recovery of the long-term private key.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-203
Published	2019-11-18
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: simplito

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-11-18 22:15 UTCPublished CVE record published
2026-06-17 02:11 UTCUpdated Record last modified

simplito elliptic-php UPGRADE

Affected: < 1.0.6

Fixed in: 1.0.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy elliptic-php || rpm -q elliptic-php || elliptic-php --version

2. UPGRADE to 1.0.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade elliptic-php

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade elliptic-php

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-10764?

elliptic-php: upgrade to 1.0.6. Exact commands for each OS are on this page.

Is CVE-2019-10764 being exploited?

CVE-2019-10764 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-10764 affect?

CVE-2019-10764 affects elliptic-php. Severity is high (CVSS 7.4). In elliptic-php versions priot to 1.0.6, Timing attacks might be possible which can result in practical recovery of the long-term private key generated by the library under certain conditions. Leakage of a bit-length of the scalar during sc

How urgent is CVE-2019-10764?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

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