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CVE-2018-16115

29
FAUCET Score

CVE-2018-16115 is a critical vulnerability affecting Lightbend Akka 2.5.x before 2.5.16, stemming from a flawed random number generator (RNG) in Akka Remoting that could lead to message disclosure and modification. With a CVSS score of 9.1 (CRITICAL), this vulnerability allows an unauthenticated attacker to compromise communication with low attack complexity, resulting in high confidentiality and integrity impacts. While there is no evidence of active exploitation, no public exploit code, and it is not on the KEV catalog, the vulnerability has garnered significant community discussion, indicating awareness among security professionals.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.5.0, < 2.5.16CPE matchmatch criteria
cpe:2.3:a:lightbend:akka:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 50th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: com.typesafe.akka:akka-actor_2.11Fixed in: 2.5.16
mavenpatch availablevia ghsa
Product: com.typesafe.akka:akka-actor_2.12Fixed in: 2.5.16

Vendor Advisories (1)

mavenGHSA-mr95-9rr4-668fcritical

Cryptographically Weak Pseudo-Random Number Generator (PRNG) in akka-actor

Oct 22, 2018

References

doc.akka.io / docs/akka/current/security/2018-08-29-aes-rng.html
Vendor Advisory