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CVE-2025-0838— Heap Buffer overflow in Abseil

Quick assessment

Affected
abseil abseil-cpp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Abseil是Abseil开源的一个 Abseil 通用库（C++）。 Abseil存在安全漏洞，该漏洞源于absl::{flat,node}hash{set​​,map}的大小构造函数、reserve和rehash方法未对其size参数施加上限，导致缓冲区溢出问题。

AI Predicted 8.6 Difficulty: Moderate EPSS 0.61% · P47

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-0838

Vulnerability Information
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Vulnerability Title
Heap Buffer overflow in Abseil
Source: CVE Program / CVE List V5
Vulnerability Description
There exists a heap buffer overflow vulnerable in Abseil-cpp. The sized constructors, reserve(), and rehash() methods of absl::{flat,node}hash{set,map} did not impose an upper bound on their size argument. As a result, it was possible for a caller to pass a very large size that would cause an integer overflow when computing the size of the container's backing store, and a subsequent out-of-bounds memory write. Subsequent accesses to the container might also access out-of-bounds memory. We recommend upgrading past commit 5a0e2cb5e3958dd90bb8569a2766622cb74d90c1
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:A/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
Abseil 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Abseil是Abseil开源的一个 Abseil 通用库（C++）。 Abseil存在安全漏洞，该漏洞源于absl::{flat,node}hash{set​​,map}的大小构造函数、reserve和rehash方法未对其size参数施加上限，导致缓冲区溢出问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
abseil abseil-cpp 0 ~ 5a0e2cb5e3958dd90bb8569a2766622cb74d90c1 -

II. Public POCs for CVE-2025-0838

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III. Intelligence Information for CVE-2025-0838

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Patches & Fixes for CVE-2025-0838 (1)

IV. Related Vulnerabilities

Same weakness: CWE-190

V. Comments for CVE-2025-0838

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